Description:Lightweight amp; portable and ultra-strong waterproof: each backpack cover comes with a rainproof storage pouch that you can just clip it to your backpackMade of high qualty material features wear-resisting and durable, protecting backpack from scratch, dirt, sand. Coating offers a reliable protection of up to rain resistance,great for any rainy activities and the portable storage pack can easily organize the backpack cover. Multi-function: due to the foldable function of this backpack rain cover, it can be used as a computer screen cover, seat cushion, bicycle rain cushion, electric fan cover and any equipment that needs to be rainproof in rainy days. Incredible durable: made of durable material which features wear-resisting and durable. Specification:Material: waterproof polyester. Color: show as picturesSize: XS, S, M, L, XL.Size: XS, height: 25-30cm, length: 20-32cm, width: 15-18cmSize: S, height: 30-40cm, length: 20-32cm, width: 15-20cmSize: M, height: 40-53cm, length: 20-32cm, width: 15-20cm Size: L, height: 63-65cm, length: 20-35cm, width: 19-23cmSize: XL, height: 70-75cm, length: 30-35cm, width: 20-23cm Note:There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions. Package include:1 * Backpack rain cover.