10 Best Roof Cargo Boxes 2026 in the United States

The Thule Force 3 is a robust choice for those in need of a large capacity roof cargo box. With its generous 21 cubic feet of storage, it is ideal for families or individuals requiring substantial space for road trips or outdoor activities. The box is designed to be aerodynamic, which should help minimize wind resistance and noise when driving. Made from durable plastic, the box is built to withstand daily wear and tear, making it suitable for active lifestyles and different weather conditions.

One of its standout features is the dual-sided opening, allowing for easy access from either side of the vehicle, a convenient option when packing or unpacking your cargo. The quick and intuitive mounting system ensures the box is securely attached and provides a clear indication when correctly mounted, making installation straightforward even for those not mechanically inclined.

Security is well-handled with the SlideLock system, which separates the locking and opening functions, ensuring that the lid is securely closed and locked, providing peace of mind during travel. Additionally, the unit's weatherproof design protects contents from the elements. However, at 53.5 pounds, it is on the heavier side, which might require some assistance during installation. Given its features, it’s best suited for SUVs, trucks, and larger vehicles, though its size might be overkill for smaller cars with less roof space.

In conclusion, the Thule Force 3 seems well-designed for those who need a reliable and spacious roof cargo solution, but potential buyers should consider their vehicle's compatibility with its size and weight.

The Thule Motion 3 XXL rooftop cargo box offers a spacious 21 cubic feet of storage, making it ideal for families or travelers needing extra room for luggage or gear. It supports up to 165 pounds, which is sufficient for most vehicle roof racks without risking damage. The box is made from durable aluminum, ensuring solid protection for your items. However, since it is not water resistant, users should be mindful when driving in heavy rain to keep valuables dry.

Its aerodynamic, wing-shaped design helps reduce wind drag and may improve fuel efficiency compared to bulkier boxes. Mounting is a standout feature with the PowerClick quick-mount system that confirms secure attachment through a torque indicator click, allowing for tool-free and fast installation. Opening and closing is smooth and user-friendly due to its wide handle and one-handed operation. The SlideLock system adds security by locking the lid and providing visual confirmation that it’s closed properly.

Although the box is large and robust, it weighs around 35 kilograms, so handling it alone can be challenging when loading or removing. Accessories such as interior lighting and protective liners enhance convenience but are sold separately. This cargo box is well suited for users seeking a reliable, easy-to-use, and roomy carrier with solid security for road trips and outdoor adventures.

The Thule Force 3 - Size L Sport roof cargo box offers a solid 11 cubic feet of storage, making it a good choice for those needing extra space for gear on SUVs, trucks, cars, or EVs. At about 31 pounds, it's relatively light for its size, which helps with installation and handling. Made of durable plastic with a sleek black finish, it is designed to withstand daily use and harsh weather, being fully waterproof. Its aerodynamic shape helps reduce drag and wind noise while driving. The mounting system is user-friendly, featuring a quick-click mechanism that confirms when the box is securely attached, making setup straightforward even for first-timers. Additionally, the dual-sided opening is convenient for accessing your belongings from either side of your vehicle without hassle.

Security is well covered by the SlideLock system, which automatically locks the lid and signals when it’s properly closed, enhancing peace of mind. A minor downside might be its width, which is relatively narrow compared to some other models, possibly limiting larger items, but this also contributes to better fit on various roof sizes. Emphasizing safety and durability, backed by extensive testing, this cargo box suits active users looking for reliable weather protection and easy operation, though those needing maximum capacity might look for larger options.