Description: FeatureThe cover offers reliable protection of rain resistance, protecting the backpack from scratch, dirt, and sand. MaterialThe backpack rain cover is made of polyester fabric, which is wear resistant, tear resistant, and waterproof, and is great for any rainy day activities. Easy to UseThe elastic edge ensures that the backpack cover stays on the backpack without slipping off, ensuring your backpack is fully covered, protecting your backpack even in high winds. Portable, LightweightThe rain cover for backpack is lightweight, can be easily folded so that you can put it in the bag of your backpack to save space. ApplicationThe backpack cover with reflective strip, suitable for outdoor activities and perfect for hiking, camping, traveling, riding, climbing, hiking, and so on. Specification: Material: Polyester Size Chart: S: for 20L-28L backapck M: for 30L-40Lbackapck L: for 42L-55Lbackapck Package Includes: 1 Waterproof Backpack Rain Cover Note: Please allow slightly errors due to manual measurement and different monitors.