Roof cargo boxes are essential for expanding your vehicle’s storage capacity, especially for road trips, outdoor adventures, or family vacations. The best models balance size, durability, ease of use, and price, but tradeoffs are common. For instance, larger boxes offer more space but can be heavier and harder to install. The top pick overall, the Thule Force 3 L US Cargo Box, excels in versatility and build quality, while the SportRack Sidekick provides a budget-friendly option for occasional use. Keep reading for a detailed breakdown to find the option that best fits your needs.
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Key Takeaways
- Size and capacity vary significantly, so choose based on your typical cargo volume needs.
- Hard-shell boxes tend to be more durable and secure but are heavier and pricier than soft-sided options.
- Dual-side opening models greatly simplify loading and unloading, especially on taller vehicles.
- Installation ease and compatibility with roof racks are critical for a hassle-free experience.
- Tradeoffs often involve balancing capacity, weight, ease of use, and cost—more space usually means more weight and complexity.
| Thule Force 3 L US Cargo Box | ![]() | Best Overall for Daily Use and Active Lifestyles | Capacity: 3 liters | Mounting System: Quick and secure with safety indicator | Locking System: SlideLock with separate locking and opening functions | VIEW ON AMAZON | See Our Full Breakdown |
| Auto Dynasty Hard Shell Roof Top Mount Cargo Carrier | ![]() | Best for Spacious Outdoor Adventures | Dimensions: 53″ L x 34″ W x 15″ H | Capacity: 11 Cubic Feet | Weight Limit: 110 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| GarveeTech Rooftop Cargo Box Carrier, 165 LBS Capacity, Dual-Side Opening, Waterproof Hard Shell, Black | ![]() | Best for Universal Fit and Large Capacity | Material: ABS | Capacity: 12 cubic feet | Weight Capacity: 165 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| SportRack Sidekick Cargo Box | ![]() | Best for Compact, Everyday Loads | Capacity: 8 cubic feet | Dimensions: 54 x 25 x 15.5 inches | Weight: 19.85 pounds | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Motion 3 Rooftop Cargo Box | ![]() | Best for Aerodynamics and Spacious Storage | Brand: Thule | Model Number: 197074566126 | Item Dimensions: 81″L x 38″W x 18″H | VIEW ON AMAZON | See Our Full Breakdown |
| DNA Motoring Rooftop Cargo Box Carrier, 11 Cubic Feet, 53″ L x 34″ W x 15″ H, Lockable, Heavy Duty, Glossy Black | ![]() | Best Budget Hard Shell Cargo Box | Capacity: 11 cubic feet | Max Load: 110 lbs | Dimensions: 53″ L x 34″ W x 15″ H | VIEW ON AMAZON | See Our Full Breakdown |
| SportRack Vista XL Rear Opening Cargo Box | ![]() | Best Large Capacity Hard Shell Cargo Box | Capacity: 18 cubic feet | Material: UV-resistant ABS | Dimensions: 63 x 38 x 19 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Pulse 2 M Roof-Mounted Cargo Box, 14 Cubic Ft | ![]() | Best for Versatile Commuting and Weekend Trips | Capacity: 14 Cubic Feet | Load Capacity: 75 kg | Material: ASA-ABS plastic | VIEW ON AMAZON | See Our Full Breakdown |
| FIVKLEMNZ 21 Cubic Rooftop Cargo Carrier Waterproof Soft Car Roof Bag | ![]() | Best Waterproof Soft Roof Bag | Capacity: 21 cubic feet | Dimensions: 52 x 40 x 18 inches | Material: 840D PVC | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Force 3 XL Cargo Box | ![]() | Best for Active Families with Large Gear | Capacity: 3 XL | Mounting System: Quick, with indicator | Access: Dual-side | VIEW ON AMAZON | See Our Full Breakdown |
| GarveeTech Rooftop Cargo Box Carrier, Dual-Side Opening, 12-14 Cubic Feet, Waterproof Hard Shell | ![]() | Best Overall for Versatile and Durable Storage | Material: ABS plastic | Capacity: 12-14 cubic feet | Dimensions: 54.3″L x 31.5″W x 13.4″H / 62.2″L x 31.5″W x 13.4″H | VIEW ON AMAZON | See Our Full Breakdown |
| Garvee Rooftop Cargo Box Carrier, Dual-Side Opening Luggage Storage | ![]() | Best Value for Weather-Resistant Extra Storage | Material: ABS plastic | Capacity: 12 cubic feet (340L) | Dimensions: 54.3″L x 31.5″W x 13.4″H | VIEW ON AMAZON | See Our Full Breakdown |
| Hard Shell Roof Top Cargo Carrier Waterproof Travel Luggage Box | ![]() | Best Universal Hard Shell for Easy Installation and Security | Material: ABS plastic | Capacity: 110 lbs | Dimensions: 53 x 34 x 15 inches | VIEW ON AMAZON | See Our Full Breakdown |
| FIVKLEMNZ Car Rooftop Cargo Carrier Waterproof Roof Bag with Accessories | ![]() | Best Soft, Universal, and Large Capacity for Flexible Packing | Material: 840D PVC | Capacity: 15 cubic feet | Dimensions: 46 x 34 x 17 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Pulse 2 L Roof Mounted Cargo Box, 16 Cubic Feet | ![]() | Best for Ease of Use and High Capacity | Capacity: 16 cubic feet | Load Capacity: 75 kg | Material: ASA-ABS plastic | VIEW ON AMAZON | See Our Full Breakdown |
| roof cargo boxe | Capacity | Material | Dimensions |
|---|---|---|---|
| Thule Force 3 L US Cargo Box | 3 liters | Durable, tested for road safety | — |
| Auto Dynasty Hard Shell Roof T | 11 Cubic Feet | UV-protected, weather-resistant ABS | 53" L x 34" W x 15" H |
| GarveeTech Rooftop Cargo Box C | 12 cubic feet | ABS | 54.3 in L x 31.5 in W x 13.4 in H |
| SportRack Sidekick Cargo Box | 8 cubic feet | — | 54 x 25 x 15.5 inches |
| Thule Motion 3 Rooftop Cargo B | — | — | — |
| DNA Motoring Rooftop Cargo Box | 11 cubic feet | Impact-resistant ABS | 53" L x 34" W x 15" H |
| SportRack Vista XL Rear Openin | 18 cubic feet | UV-resistant ABS | 63 x 38 x 19 inches |
| Thule Pulse 2 M Roof-Mounted C | 14 Cubic Feet | ASA-ABS plastic | — |
| FIVKLEMNZ 21 Cubic Rooftop Car | 21 cubic feet | 840D PVC | 52 x 40 x 18 inches |
| Thule Force 3 XL Cargo Box | 3 XL | — | — |
| GarveeTech Rooftop Cargo Box C | 12-14 cubic feet | ABS plastic | 54.3"L x 31.5"W x 13.4"H / 62.2"L x 31.5"W x 13.4"H |
| Garvee Rooftop Cargo Box Carri | 12 cubic feet (340L) | ABS plastic | 54.3"L x 31.5"W x 13.4"H |
| Hard Shell Roof Top Cargo Carr | 110 lbs | ABS plastic | 53 x 34 x 15 inches |
| FIVKLEMNZ Car Rooftop Cargo Ca | 15 cubic feet | 840D PVC | 46 x 34 x 17 inches |
| Thule Pulse 2 L Roof Mounted C | 16 cubic feet | ASA-ABS plastic | — |
More Details on Our Top Picks
Thule Force 3 L US Cargo Box
The Thule Force 3 L US stands out for its combination of durability and sleek design, making it ideal for those who need a reliable carrier for frequent trips. Compared with larger options like the Thule Motion 3, this model offers a more compact size, which can be an advantage for smaller vehicles or urban parking. Its quick, secure mounting system with safety indicators simplifies setup, while the SlideLock system enhances security and ease of access. However, with only 3 liters of capacity, it’s best suited for small cargo or essentials, not bulky gear. This pick makes the most sense for active individuals who prioritize security and quick access over large volume.
Pros:- Easy and secure mounting system with safety indicators
- Provides convenient access from both sides
- Extensively tested for durability and safety
Cons:- Limited capacity (3 liters) may not suit larger cargo needs
- Designed for specific vehicle compatibility, requiring checks
Best for: Active commuters or urban drivers needing secure, small cargo space for daily essentials
Not ideal for: Families requiring large volume for bulky luggage or multiple gear sets
- Capacity:3 liters
- Mounting System:Quick and secure with safety indicator
- Locking System:SlideLock with separate locking and opening functions
- Material:Durable, tested for road safety
Our verdict“This is a great choice for daily users who need a compact, secure roof box for small cargo loads.”
Auto Dynasty Hard Shell Roof Top Mount Cargo Carrier
The Auto Dynasty Cargo Carrier offers a generous 11 cubic feet of storage, making it suitable for family trips and outdoor gear. Its weather-resistant ABS construction and impact protection ensure belongings stay safe in various conditions. Compared to the SportRack Sidekick, which is more compact and suited for smaller loads, this model provides significantly more space for bulky items. The 14-inch wide opening facilitates easier loading, but its universal fit may not be compatible with all cross bars, and its weight can make installation more challenging alone. This cargo box is ideal for outdoor enthusiasts who prioritize capacity and weather protection over ease of handling.
Pros:- Spacious 11 cubic feet capacity
- Secure lock system for valuables
- Weather-resistant and impact-protected design
Cons:- Universal fit may not suit all cross bars
- Heavy weight can complicate installation alone
Best for: Families or outdoor lovers needing large, weatherproof storage for gear
Not ideal for: Urban drivers with limited roof space or those who prefer lightweight accessories
- Dimensions:53″ L x 34″ W x 15″ H
- Capacity:11 Cubic Feet
- Weight Limit:110 lbs
- Material:UV-protected, weather-resistant ABS
Our verdict“This model makes sense for users seeking ample, weatherproof cargo space for outdoor trips.”
GarveeTech Rooftop Cargo Box Carrier, 165 LBS Capacity, Dual-Side Opening, Waterproof Hard Shell, Black
The GarveeTech Cargo Box excels with a large 12 cubic feet capacity and a robust 165 lbs weight limit, making it a versatile choice for various roof racks. Its dual-sided opening enhances access, while the durable ABS construction provides weather resistance. Compared with the Thule Force 3 L US, which is more compact and specialized, the GarveeTech offers a broader fit for different vehicles, though its shorter warranty period of just 30 days might be a concern. This cargo box is suited for those who need a large, reliable carrier with broad compatibility and easy access.
Pros:- Durable and weather-resistant construction
- Large 12 cubic feet storage capacity
- Universal fit with all roof rack vehicles
- Dual-sided opening for convenience
Cons:- Limited warranty period of 30 days
- May require verification for specific roof rack compatibility
Best for: Vehicle owners needing a large, durable cargo box with universal compatibility
Not ideal for: Casual users who prioritize lightweight or minimalistic options
- Material:ABS
- Capacity:12 cubic feet
- Weight Capacity:165 lbs
- Dimensions:54.3 in L x 31.5 in W x 13.4 in H
- Opening:Dual-sided
- Color:Black
Our verdict“This is a strong choice for users seeking a large, versatile, and easy-to-access cargo box for various vehicles.”
SportRack Sidekick Cargo Box
The SportRack Sidekick is tailored for small loads, offering 8 cubic feet of space that’s perfect for camping gear or golf clubs. Its compact dimensions and passenger-side opening make it easy to load without overhanging or interfering with vehicle aesthetics. Compared with larger options like the GarveeTech, this model is less suited for bulky or heavy cargo but excels in tight spaces where simplicity and ease of access matter most. Its 75-pound load limit restricts larger gear, making it best for lighter, everyday use. This cargo box appeals to those who want a space-efficient, straightforward carrier for small to medium loads.
Pros:- Compact and space-efficient design
- Easy to load with passenger-side opening
- Fits most roof rack systems
Cons:- Limited load capacity for larger or heavier cargo
- Not suitable for bulky or oversized items
Best for: Car owners needing a compact, easy-to-handle cargo solution for light loads
Not ideal for: Travelers with large or heavy gear, or those needing maximum capacity
- Capacity:8 cubic feet
- Dimensions:54 x 25 x 15.5 inches
- Weight:19.85 pounds
- Load capacity:75 pounds
Our verdict“This is best suited for users needing a small, practical cargo box for light, everyday gear.”
Thule Motion 3 Rooftop Cargo Box
The Thule Motion 3 combines sleek, aerodynamic design with ample interior space, making it ideal for modern adventurers. Its larger 81″ length and 38″ width provide significant volume, surpassing smaller models like the SportRack Sidekick. The quick-mount system and automatic lock indicator simplify installation and security, though some user feedback suggests installation can be tricky for beginners. Its aerodynamic shape helps reduce drag, improving fuel efficiency on longer trips. This cargo box is best suited for those who value stylish, large-capacity storage with efficient mounting features, even if it’s somewhat more complex to install initially.
Pros:- Aerodynamic design reduces drag and improves fuel efficiency
- Easy to mount with quick-mount system and torque indicator
- Spacious interior offers ample storage
Cons:- No specific price details available
- Some users find installation less straightforward
Best for: Outdoor enthusiasts and families needing large capacity with aerodynamic benefits
Not ideal for: Urban drivers or those with limited roof space seeking a smaller, lightweight option
- Brand:Thule
- Model Number:197074566126
- Item Dimensions:81″L x 38″W x 18″H
- Unit Count:1
- Included Components:Rooftop cargo carrier
- Warranty:Limited Lifetime
Our verdict“This is a solid pick for those wanting a large, stylish, and fuel-efficient roof cargo solution.”
DNA Motoring Rooftop Cargo Box Carrier, 11 Cubic Feet, 53″ L x 34″ W x 15″ H, Lockable, Heavy Duty, Glossy Black
This cargo box stands out for its large 11 cubic feet capacity and durable impact-resistant ABS build, making it a solid choice for budget-conscious travelers seeking reliable weather protection. Compared with the SportRack Vista XL, which offers even larger volume at 18 cubic feet, the DNA Motoring is more compact and easier to handle, though it sacrifices some storage space. The lockable feature adds security, but it’s important to note that it requires cross bars for installation, limiting compatibility. Its glossy black finish offers a sleek look, and the impact-resistant material ensures durability over time. However, with no included mounting hardware, setup may require extra effort for beginners. This pick makes the most sense for drivers who want a sturdy, affordable option that fits vehicles with existing cross bars and don’t mind a slightly smaller capacity.
Pros:- Large 11 cubic feet storage capacity
- Impact-resistant, weatherproof construction
- Secure lockable system for valuables
- Easy to install on vehicles with cross bars
Cons:- Requires cross bars for installation
- No included mounting hardware or accessories
Best for: Budget-conscious families with cross bars looking for a durable, lockable cargo box
Not ideal for: Those without cross bars or seeking the largest possible capacity at this price point
- Capacity:11 cubic feet
- Max Load:110 lbs
- Dimensions:53″ L x 34″ W x 15″ H
- Finish:Glossy Black
- Material:Impact-resistant ABS
Our verdict“This cargo box is ideal for budget-minded users who need a reliable, lockable carrier with decent capacity and existing cross bars.”
SportRack Vista XL Rear Opening Cargo Box
The SportRack Vista XL makes the most sense for those prioritizing maximum storage, offering a spacious 18 cubic feet capacity that outstrips many competitors like the Thule Pulse 2 M. Its UV-resistant ABS construction ensures durability in various weather conditions, and the rear opening design simplifies access to your gear. Installation is tool-free, appealing to users who want quick setup, but it may be heavy to handle for some. Compatibility with a range of rack systems is a plus, yet it’s limited to certain spacing specifications, so double-check your vehicle’s rack dimensions. Compared to smaller models, this is a clear winner for large families or groups needing to transport bulky gear, but it might be overkill for solo travelers or those with smaller racks.
Pros:- Huge 18 cubic feet capacity
- UV-resistant, durable ABS material
- Rear opening for easy access
- Tool-free, quick mounting
Cons:- Heavy and potentially cumbersome to handle
- Limited compatibility with some rack spacing
Best for: Families or groups needing maximum storage and easy access for outdoor trips
Not ideal for: Drivers with smaller or narrower roof racks, or those seeking a lightweight solution
- Capacity:18 cubic feet
- Material:UV-resistant ABS
- Dimensions:63 x 38 x 19 inches
- Max Weight Capacity:100 pounds
- Min-Max Crossbars Spacing:23 5/8 – 29 3/4 inches
Our verdict“Best suited for large groups or families needing maximum cargo space with straightforward access and installation.”
Thule Pulse 2 M Roof-Mounted Cargo Box, 14 Cubic Ft
The Thule Pulse 2 M is a reliable choice for everyday use, offering 14 cubic feet of weather-resistant space. Its dual-side opening provides convenient access from either side, especially helpful in tight parking or urban settings. The tool-free mounting system features a torque indicator, which helps ensure secure attachment without over-tightening—an advantage over some staples like the Thule Force 3 XL, which can be bulkier and less adaptable to smaller vehicles. While it lacks explicit lock security details, its durable ASA-ABS plastic withstands the elements well. This model targets users who value quick, secure installation and easy access but may find it less suitable for extremely large loads or those needing a lockable feature integrated into the design.
Pros:- 14 cubic feet capacity
- Easy tool-free installation with torque indicator
- Weather-resistant, durable ASA-ABS plastic
- Dual-side access for convenience
Cons:- Lacks integrated lock for security
- Potentially limited to certain vehicle sizes
Best for: Urban drivers or weekend travelers needing a secure, easy-to-use cargo box
Not ideal for: Large families or travelers with extensive gear requiring the maximum volume
- Capacity:14 Cubic Feet
- Load Capacity:75 kg
- Material:ASA-ABS plastic
- Access:Dual-side opening
Our verdict“Ideal for daily commuters and weekend adventurers who prioritize quick setup and easy access over maximum volume.”
FIVKLEMNZ 21 Cubic Rooftop Cargo Carrier Waterproof Soft Car Roof Bag
This soft roof bag offers a generous 21 cubic feet of waterproof storage, making it ideal for travelers who need high capacity without the rigidity of a hard shell. Its high-frequency welded seams and durable 840D PVC material ensure exceptional weather resistance, comparable to the waterproofing features of the GarveeTech hard shell options. The universal fit and included travel essentials like straps, a lock, and an anti-slip mat make it versatile and easy to install on nearly any vehicle, even those without a roof rack. Compared to hard shell models like the Thule Force 3 XL, it’s more flexible and easier to store when not in use, though it can be bulkier to handle and stiff to fold. This product is best for outdoor enthusiasts who prioritize waterproofing and capacity over a sleek, rigid profile.
Pros:- Highly waterproof with welded seams
- Large capacity suitable for multiple suitcases
- Universal fit for all vehicle types
- Includes complete travel kit
Cons:- Bulky when stored
- Stiff, can be difficult to fold and handle
Best for: Adventurers needing waterproof, high-capacity storage that fits all vehicle types
Not ideal for: Users seeking a lightweight, compact solution or minimal storage needs
- Capacity:21 cubic feet
- Dimensions:52 x 40 x 18 inches
- Material:840D PVC
- Seams:High-frequency welded
- Includes:Anti-slip mat, luggage lock, straps, hooks
Our verdict“Best for outdoor explorers who need a waterproof, high-capacity carrier that’s flexible and easy to install on any vehicle.”
Thule Force 3 XL Cargo Box
The Thule Force 3 XL delivers a sleek, durable design with 3 XL capacity, making it suitable for active lifestyles that require transporting bulky gear. Its quick, secure mounting system features an indicator for correct installation, and the dual-side access simplifies loading and unloading from tight spots. Compared to the Thule Pulse 2 M, which offers less capacity and a more compact profile, the Force 3 XL prioritizes maximum volume and security. However, its size may be a drawback for smaller or lower-profile vehicles, and installation can be somewhat effortful initially. This cargo box makes the most sense for larger SUVs or minivans where space is abundant and heavy-duty use is expected, but less so for compact cars or solo travelers.
Pros:- Large capacity with 3 XL volume
- Weather-resistant, durable construction
- Easy, secure mounting system with indicators
- Dual-side access for convenience
Cons:- Bulky for smaller vehicles
- Initial setup may require effort
Best for: Active families or outdoor enthusiasts with larger vehicles and gear needs
Not ideal for: Small cars or users with limited roof space who prefer a more compact carrier
- Capacity:3 XL
- Mounting System:Quick, with indicator
- Access:Dual-side
- Locking System:SlideLock
Our verdict“Best suited for larger vehicles and active users needing maximum cargo capacity and easy access, with a focus on security and durability.”
GarveeTech Rooftop Cargo Box Carrier, Dual-Side Opening, 12-14 Cubic Feet, Waterproof Hard Shell
The GarveeTech Rooftop Cargo Box stands out for its robust ABS construction, offering excellent waterproof and UV-resistant protection—making it a reliable choice for all weather conditions. It provides a generous 12-14 cubic feet of storage, comparable to the Thule Pulse 2 L, but with a dual-sided opening that simplifies access from either side of the vehicle. Unlike some premium options, its universal fit on most roof racks adds to its versatility, though potential buyers should verify compatibility first. The main tradeoff is its limited color options and some feedback about fit or ease of installation, which can be a concern for those seeking a quick setup. This pick makes the most sense for drivers needing a sturdy, weatherproof carrier that doesn’t require the highest price tag.
Pros:- Durable waterproof and UV-resistant construction
- Spacious 12-14 cubic feet capacity
- Dual-sided opening for convenient access
- Universal fit with most roof racks
Cons:- Limited color options and potential fit issues
- Customer dissatisfaction reports related to installation or compatibility
Best for: Families or outdoor enthusiasts who want reliable, all-weather protection and easy access.
Not ideal for: Owners of small or low-profile vehicles who may find the size cumbersome or need a more discreet option.
- Material:ABS plastic
- Capacity:12-14 cubic feet
- Dimensions:54.3″L x 31.5″W x 13.4″H / 62.2″L x 31.5″W x 13.4″H
- Weight Capacity:165 lbs
- Color:Black
- Number of Items:1
Our verdict“This is best suited for those seeking a durable, weatherproof cargo solution with flexible access, and who are willing to verify fit beforehand.”
Garvee Rooftop Cargo Box Carrier, Dual-Side Opening Luggage Storage
Compared with the GarveeTech model, the Garvee Rooftop Cargo Box offers a similar 12 cubic feet of space but emphasizes aerodynamic design to help reduce fuel consumption and noise. It features dual-sided access, making packing and retrieving gear more straightforward, especially during long trips. This hard shell carrier is built from durable ABS and includes a two-key security system, offering peace of mind for valuables. The one-year warranty is a slight limitation compared to higher-end models like the Thule Pulse 2 L, but it still provides reliable weather resistance and compatibility with most roof racks. The main tradeoff is verification needed for roof rack fit and the limited warranty period. It’s an excellent option for budget-conscious travelers who want weatherproof storage with convenient access.
Pros:- Durable, weather-resistant ABS construction
- Adequate 12 cubic feet capacity
- Dual-sided access for convenience
- Includes 2 keys and straps for security
Cons:- Requires verifying roof rack compatibility
- Limited warranty period of one year
Best for: Budget-conscious drivers seeking reliable, weather-resistant capacity on most roof rack-equipped vehicles.
Not ideal for: Owners of vehicles without roof racks or those needing long-term warranty coverage or premium features.
- Material:ABS plastic
- Capacity:12 cubic feet (340L)
- Dimensions:54.3″L x 31.5″W x 13.4″H
- Max Load:165 lbs
- Features:Dual-sided opening, waterproof, UV-resistant, includes 2 keys and straps
Our verdict“Ideal for budget-minded users who want weatherproof, easy-to-access cargo space on roof racks with minimal fuss.”
Hard Shell Roof Top Cargo Carrier Waterproof Travel Luggage Box
The Hard Shell Roof Top Cargo Carrier offers a straightforward, universal solution with easy cross-bar installation, making it suitable for a wide range of vehicles. Made from durable ABS plastic, it provides weather resistance and a lockable lid for added security. Its 110 lbs weight capacity and 53 x 34 x 15-inch size allow it to handle a variety of luggage and gear, comparable to more specialized carriers like the Thule Pulse 2 L but with a simpler, more universal approach. The main tradeoff is that it lacks internal compartments, and its heft can make handling challenging, especially for solo users. This model appeals to travelers who prioritize secure, weatherproof storage that can be quickly mounted on most cross bars without fuss.
Pros:- Durable, weather-resistant construction
- Secure lock system
- Easy cross-bar installation
- Universal fit for many vehicles
Cons:- No internal compartments or padding
- Heavy to handle alone
Best for: Travelers needing a secure, weather-resistant cargo box compatible with cross bars on various vehicles.
Not ideal for: Owners of vehicles without cross bars or those seeking internal organization features or lightweight options.
- Material:ABS plastic
- Capacity:110 lbs
- Dimensions:53 x 34 x 15 inches
- Includes:Cargo box, keys, mounting brackets, hardware
Our verdict“This is a solid choice for users who want a secure, weatherproof cargo box that installs easily on cross bars across different vehicles.”
FIVKLEMNZ Car Rooftop Cargo Carrier Waterproof Roof Bag with Accessories
The FIVKLEMNZ Roof Bag offers a different approach with its soft, flexible design crafted from rugged 840D PVC, providing excellent waterproofing with welded seams. Its 15 cubic feet of capacity makes it one of the largest soft carriers, easily accommodating multiple suitcases and gear, surpassing rigid options like the Thule Pulse 2 L in volume. Its universal fit works on all vehicle types, with quick, tool-free installation, and includes useful accessories like straps, hooks, and an anti-slip mat. However, securing the bag tightly is essential to prevent movement at high speeds, and its size may be cumbersome for small or low-clearance vehicles. It’s best suited for outdoor adventurers and road trippers who need maximum flexibility and capacity without permanent mounting.
Pros:- Waterproof, heavy-duty PVC construction
- Large 15 cubic feet capacity
- Universal fit with quick installation
- Includes accessories for secure fastening
Cons:- Requires careful securing to prevent movement
- May be too large for small vehicles
- Installation can be challenging for beginners
Best for: Outdoor enthusiasts needing large, flexible cargo space, especially on vehicles without roof racks or those who prefer soft carriers.
Not ideal for: Drivers with small cars or those seeking a permanent, rigid cargo solution with internal organization.
- Material:840D PVC
- Capacity:15 cubic feet
- Dimensions:46 x 34 x 17 inches
- Includes:Anti-slip mat, reinforced straps, door hooks, luggage lock, storage bag
Our verdict“Best suited for those who need maximum cargo flexibility and capacity in outdoor or rugged conditions, with some effort in securing.”
Thule Pulse 2 L Roof Mounted Cargo Box, 16 Cubic Feet
The Thule Pulse 2 L offers a generous 16 cubic feet of weather-resistant storage, making it ideal for large luggage, skis, or snowboards. Its key feature is the tool-free, torque-indicator system that simplifies installation and ensures proper attachment, a major advantage over manual setups like the GarveeTech models. Its dual-side opening provides quick access on busy trips, and its sleek, aerodynamic design minimizes wind noise and drag. The main limitation is the lack of detailed dimensions in the product info and no mention of built-in security features, which might be a concern for valuables. This model is perfect for users prioritizing capacity and easy, secure installation without sacrificing vehicle aerodynamics.
Pros:- Easy to install with tool-free system and torque indicator
- Weather-resistant, durable construction
- Dual-side access for convenience
- Large 16 cubic feet capacity
Cons:- Lack of specific dimensions may complicate fitting
- No integrated security or lock system detailed
Best for: Travelers seeking large capacity with straightforward, tool-free installation and secure, weatherproof storage.
Not ideal for: Those with small vehicles or who need internal compartments or advanced security features.
- Capacity:16 cubic feet
- Load Capacity:75 kg
- Material:ASA-ABS plastic
- Access:Dual-side opening
Our verdict“Ideal for users who want a large, easy-to-mount cargo box with minimal fuss and maximum capacity.”

How We Picked
Products were evaluated based on a combination of capacity, build quality, ease of installation, security features, and weather resistance. We prioritized models that offer a good mix of durability and user-friendly features, ensuring a range of options for different budgets and needs. Our rankings reflect how well each cargo box balances these factors, with an emphasis on value and versatility. We also considered customer feedback on reliability and ease of maintenance to identify models that perform consistently over time.Factors to Consider When Choosing Roof Cargo Boxes
Choosing the right roof cargo box involves more than just capacity. It’s important to consider how your vehicle’s roof rack system will integrate, how often you’ll use the box, and what kind of cargo you plan to carry. Beyond the specs, understanding the tradeoffs between size, weight, and ease of access can help you avoid common pitfalls that diminish usability or safety. This guide highlights key factors to consider for a smart purchase that enhances your travel experience.Size and Capacity
The size of the cargo box directly impacts how much gear you can carry, but larger boxes tend to be heavier and more difficult to handle. Think about your typical cargo needs—if you often travel with family or sports gear, a bigger model makes sense. Conversely, if you only need occasional extra space, a more modest size might be more manageable. Always verify your vehicle’s roof load limit to prevent overloading, which can compromise safety and vehicle performance.
Material and Durability
Hard-shell boxes usually feature ABS or fiberglass shells, providing superior protection against weather and impacts. Soft-sided options are lighter and easier to store but can be less waterproof and secure. When choosing a material, consider your climate—harsh weather demands a robust, waterproof design. Also, check for UV resistance to prevent cracking and fading over time. Durability is crucial if you plan to use the box frequently or in rough conditions.
Ease of Installation and Compatibility
A cargo box that’s simple to install and remove saves time and effort, especially if you switch vehicles or need to take it on and off regularly. Look for models with universal mounting systems compatible with most roof racks. Dual-side opening designs make loading easier, particularly for taller vehicles or tight parking spots. Be cautious with overly complex mounting systems that might require specialized tools or experience, which can add frustration.
Weather Resistance and Security
Since roof cargo boxes are exposed to the elements, waterproofing and weather sealing are vital. Good models include secure locks to prevent theft and keep your gear safe. Consider the seal design—double-gasket seals tend to be more effective. Additionally, a sturdy lock system provides peace of mind for valuable or sensitive cargo. Remember, no box is completely theft-proof, but quality locks significantly deter opportunistic thefts.
Price and Value
Price often correlates with capacity, durability, and features. While it might be tempting to opt for a low-cost soft-sided bag, investing in a hard-shell box could pay off in longevity and security. Conversely, if you only need occasional extra space, a budget-friendly soft or medium-sized hard shell may suffice. Consider how often you’ll use the cargo box and whether the added features of premium models justify their higher cost. Balancing budget against your needs will help you avoid overspending or ending up with a product that doesn’t meet your expectations.
Frequently Asked Questions
Will a roof cargo box fit on my vehicle’s roof rack?
Most roof cargo boxes are designed to be compatible with standard roof racks, but compatibility depends on your vehicle’s specific rack system and the box’s mounting mechanism. Check the dimensions of your roof rack and compare them with the mounting instructions of the cargo box. Some models feature universal clamps or straps, making installation straightforward, while others might require adapters. Confirming compatibility before purchase prevents surprises during installation.
How does the size of the cargo box affect fuel efficiency?
Generally, larger and heavier cargo boxes increase wind resistance, which can negatively impact your vehicle’s fuel economy. The added weight also requires more engine effort, especially on uphill drives. If fuel efficiency is a priority, opting for a smaller, lightweight model can help reduce drag and weight. Remember that the benefits of extra storage should be weighed against the potential increase in fuel consumption, especially on long trips.
Are soft-sided roof bags as durable as hard-shell cargo boxes?
Soft-sided roof bags are lighter and easier to store but tend to offer less protection against impacts, weather, and theft. They are more vulnerable to tears, abrasions, and water ingress if not properly maintained. Hard-shell containers, often made of ABS or fiberglass, provide a more robust barrier against the elements and physical damage, making them better suited for frequent or rough use. Your choice should reflect how often and in what conditions you plan to use the cargo carrier.
What is the best way to ensure security for my cargo in a roof box?
Choosing a model with a high-quality lock system significantly enhances security. Look for cargo boxes with keyed locks or combination locks that are resistant to tampering. Positioning the lock in a discreet location can help deter theft attempts. Additionally, parking in well-lit, secure areas adds another layer of protection. Remember, no lock can guarantee complete security, but a reputable locking system makes theft less convenient and less likely.
How often should I clean and maintain my roof cargo box?
Regular cleaning after trips, especially in winter or after exposure to mud, salt, or debris, extends the lifespan and keeps it looking new. Use mild soap and water, avoiding harsh chemicals that could degrade the material. Periodically check the locks, seals, and mounting hardware for signs of wear or damage, replacing parts as needed. Proper maintenance ensures your cargo box remains secure, weatherproof, and easy to use over many seasons.
Conclusion
Choosing the right roof cargo box depends on your specific needs: For overall versatility and durability, the Thule Force 3 L US stands out as the best all-around choice. If you’re looking for budget-friendly options for occasional use, the SportRack Sidekick offers solid value. For those willing to invest in premium features and maximum capacity, the Thule Motion 3 or Thule Pulse 2 L are excellent choices. Beginners or casual users will benefit from models with easy installation and soft-sided options, while frequent travelers or outdoor enthusiasts should prioritize weather resistance and security. Your ideal choice hinges on balancing capacity, ease of use, and budget—use this guide to match your vehicle and lifestyle with the perfect cargo solution.

















