The Thule Force XT XXL Cargo Box, the perfect multi-sport cargo box. Get your friends in the car and your gear into a Force XT. Versatile, yet sleek and aerodynamically designed to reduce drag and wind noise. PowerClick mounting hardware fits most crossbars and ensures fast and secure fitting. The Force XT offers a stylish and compact method in which to stow all your goodies. Skis, boards, paddles or smelly gear you don't want in your car, this Force XT fits it all with ease.