100% waterproof, with covers the zipper in heavy rain,offers the best weather protection. This Top Cargo Bag with 6 built-in strong, wide straps and 2 extra straps to ensure that everything stays in place. When it isn't in use, compact design allows you to fold and store it anywhere. Bring Everything you Want Designed to fit all roof racks such as cars, vans, SUVs. Heavy duty construction will protect your belongings from exposure. The compacity of our waterproof rooftop cargo bag is 21 cubic feet, Ideal for on-the-go families, adventure-seekers, or anyone just looking for some additional space while traveling. When not in use, it conveniently folds up and can be stored in the included compact bag, saving storage space both in your garage and trunkguarantee for our car roof storage bag Package Content - 21 Cubic Large Space 1* Roof Bag 1* Anti-Slip Mat 1* storage bag 2* Door hooks 6 Reinforced Straps