Come and see our amazing products. This cover can be used as travel backpack cover, bookbag cover, college bag cover, knapsack cover and packsack cover. The exterior layer is durable wear-resistant fabric to protect backpack from scratch, dirt and sand. The inner layer is waterproof coating to keep backpack from water, rain, fog and snow. It is can ensure your gear stays completely dry while traveling, kayaking, boating, swimming, biking, gardening, beach walking, climbimg, jogging, commuting, camping, and fishing. Pls confirm with us about the packing info, stock color and exact production time before placing your order.