WATERPROOF MATERIAL: This cargo roof carrier is made from 100% waterproof material. Therefore, even in a downpour, your cargo is safe. This design also protects against grit, sun, and wind VERY EASY TO STORE AND INSTALL: The foldable material used to make this car cargo bag means that it folds away easily and only uses up very little space for storage. It is equally easy to install. It is suitable for cars, vans, SUVs and more INCREASES CARGO SPACE: With this top cargo bag, you get an additional 15 cubic feet of storage space to carry extra luggage. Its soft material makes it perfect for carrying oddly shaped cargo thus creating additional space in your car STRONG, WIDE STRAPS: To ensure that everything stays in place even when the road gets rough and bumpy, this cargo carrier waterproof bag has strong, wide straps that hold it in place. Extra fabric with velcro also covers the zipper in heavy rain. INCLUDED LUGGAGE LOCK: When traving its always good to keep your roog bag closed with a lock