Product Size: S, M, L Color: black + green Material: waterproof polyester Package content: 2pcs backpack rain cover 1.Suitable forThis rain cover is suitable for backpack, computer bag, school bag, etc. It is a necessity for outdoor travel and daily life. Protect your backpack and important items from rainwater and muddy water on rainy and snowy days. 2.Waterproof material: the rain cover is made of strong, tear-resistant nylon. The interior has a waterproof coating that effectively prevents rain and snow. 3.Reflective strips: with reflective strips on the front, makes you visible in dark night and keeps you from accidental injuries, effectively keeps you safe. 4.Adjustable Buckle: Located in the center of the back of the rain cover to keep the rain cover from slipping. 5.Elastic band: good stretch, easy to put on different types of backpacks.