10 Best Roof Top Cargo Carriers 2026 in the United States

The Thule Force 3 XXL rooftop cargo box is a solid choice if you need plenty of extra storage on your vehicle. With a roomy 21 cubic feet capacity and large dimensions (about 91.4 x 35.2 x 17.9 inches), it can carry sizable gear for family trips or outdoor adventures. It supports a good weight limit typical for rooftop carriers, and its plastic shell is designed to be durable and weather resistant, helping protect your belongings from rain and road grime. One of its standout features is the dual-sided opening, which makes loading and unloading much easier because you can access your cargo from either side of your vehicle. The mounting system is tool-free and user-friendly, with a click indicator that confirms the box is securely attached—this adds peace of mind and saves time when installing or removing the carrier. Additionally, the SlideLock system enhances security by locking the lid in place and signaling when it's properly closed, discouraging theft.

The aerodynamic design helps reduce wind noise and drag compared to bulkier boxes, which is helpful for fuel efficiency during long drives. On the downside, the unit weighs about 53.5 pounds, making it a bit heavy to handle alone, especially during installation. Also, while it fits most SUVs, trucks, cars, and EVs, its size might be too large for smaller vehicles or tight parking spaces. For those seeking a reliable, spacious, and easy-to-use rooftop cargo box that balances convenience with strong build quality, the Thule Force 3 XXL is a highly recommended option.