The Bully Waterproof Cargo Carriers are a great way of transporting your gear while freeing up precious interior space in your truck, van or SUV. Made of a durable waterproof vinyl, these Bully Cargo Carriers will give you peace of mind that your gear is not only safe but dry. The built-in adjustable hooks allow secure attachment to your roof rack while the aerodynamic design reduces wind noise. Offered in either 15 or 18 cubic foot capacities allows for plenty of extra space to store all your gear. Make that long drive more comfortable and worry free. Comes with a 1-year limited warranty.