100% waterproof, incredibly durable: This backpack rain cover is made of 300D high-quality rain proof, scratch proof, wear-resistant plaid oxford cloth, which can protect the backpack from scratches, dirt and sand. The water pressure of waterproof polyester is 5000Pa, and the outlet can effectively drain water. It is suitable for any rainy day activity. If you are not satisfied, a 100% money back guarantee is guaranteed. Reflective Strips Stay Safe at Night: This backpack case comes with a large reflective strip. Adding reflective strips can effectively reduce the occurrence of traffic accidents and ensure the safety of outdoor activities. Upgraded design, comprehensive protection: The adjustable elastic band on the backpack cover allows you to easily adjust the size of the bag. Cross adjustable straps provide extra stability and ensure the backpack is fully covered and dry. Versatile and widely used: because this waterproof backpack cover has a foldable function, it can be used as a bicycle rain pad, an electric fan cover and any equipment that needs rain protection in rainy days. Great for hiking, camping, cycling, fishing and other outdoor activities.