The backpack Rain cover with PU coating on the surface even in downpours can also protect your backpack from heavy rainElastic material around the edge of the cover, it is able to adjust the size according to different backpacks.Made of waterproof wear-resisting Polyester material, durable, very light almost weightless, portable, useful and scratch-resistant.The rain cover for backpack fold into a carrying back simply, takes up very little room and weighs practically nothing, you can just throw this in the side pocket of the bag and use it whenever.Perfect for school bag, backpack, daypack, overnight bag for outdoor travel, riding, climbing, hiking, cycling, commuting and so on