Brightent Car Cover 4 Layers Full Size Outdoor Waterproof Universal Fit Delux (Car Length 191"-210") Why spend so much money to buy car covers made of 5 layer, or 7 layer? Comparing with these expensive ones, our 4 layer covers can be almost the same water-proof and same durable, and it can save your money! This item is made of high quality 4 layers non-woven material, which is very good water-proof. And it has strong elastic bottom hem, for wind proof. For wind proof, this cover has 2 grommets and 4 loops sewed at the bottom, you can find the cord to tight the cover.