10 Best Roof Cargo Boxes 2025 in the United States

The Thule Force 3 XL is a spacious roof cargo box offering 18 cubic feet of storage, making it a great choice for families or active users needing extra room on their SUV, truck, car, or even electric vehicle. Weighing 66 pounds, it’s relatively lightweight for its size, which helps with easier handling during installation. Made from durable plastic, it’s designed to withstand daily use and various weather conditions, although it's water-resistant rather than fully waterproof, so heavy rain might still be a consideration.

One standout feature is its aerodynamic shape, which helps reduce wind noise and drag, potentially improving fuel efficiency compared to bulkier boxes. The mounting system is user-friendly and tool-free, with a clear click indicator to confirm the box is securely attached — this makes setup fast and reassuring. Dual-sided opening is a big convenience plus, allowing access to your gear from either side of the vehicle without having to unload everything.

Security is well thought out with the SlideLock system, which automatically locks the lid and visually confirms when it’s securely closed, giving peace of mind when leaving your belongings unattended. The Thule Force 3 XL is well-suited for anyone looking for a reliable, easy-to-use, and spacious hard-shell roof box with smart security and practical accessibility. It balances durability and convenience effectively, though those frequently driving in very wet climates might want to consider its water resistance level.

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 Yakima SkyBox NX XXL is a hard shell roof cargo box designed for families and outdoor enthusiasts needing extra storage on their vehicle roof. It offers a generous 22 cubic feet of space, enough to hold gear for up to five campers or skis as long as 215 cm, making it suitable for large trips or bulky equipment. The dual-sided opening is a handy feature that makes loading and unloading easier from either side of the car. Built from durable plastic with a sleek, textured finish, it looks modern while providing sturdy protection for your belongings. Its security is enhanced by push-button SKS locks, which offer reliable protection against theft.

This model is not water-resistant, so it may not fully protect your gear in heavy rain. The mounting system is a roof mount type, designed to fit most vehicles securely. Although the box is solid and practical, it is relatively heavy when loaded, which could affect fuel efficiency due to added weight and wind resistance.

This cargo box represents a strong choice for those needing a spacious, secure, and stylish storage solution for travel and camping, but it may require some care in wet weather.