This X-BULL Waterproof Car Roof Cargo Bag is made of three-layer high-density 900D PVC fabric, providing good waterproof performance and resistance to tears. It's ideal for protecting your luggage from wind, sand, rain, snow, and sunlight on the road, extending its service life. The bag has a massive 595L capacity, making it easy to accommodate all the luggage for the whole family. This allows you to free up interior space for a more comfortable journey. The upgraded waterproof zipper and widened 4.7-inch zippered lid prevent rainwater penetration and keep your stuff 100% dry. The bag also features reinforced adjustable shoulder straps and fitted anti-skid pads that keep your luggage in place even on the highway, preventing it from falling off while driving. The anti-skid pads also protect your roof from scratches and damage. The product comes with a worry-free after-sales guarantee, providing 7x24 hours of support from a professional team.