Effectively protecting your backpack and belongings from rain, water, snow, dirt, sand, bugs and scratches. Features 1. Collapsible and lightweight, only 80g,(0.17 LB).2. Sealed with 2 layers: nylon and water resistant cloth. Flexible and water resistant, elastic belt is around the rim of rain cover that keep the protector cover backpack steadily and tightly. Designed for 30L - 80L backpack, suitable for raining, snowing and other weathers. Protecting your backpack and keep everything dry. More informaion about the size. We devote ourselves to supply the most appropriate size of cover to your backpack. We work hard to work it out. And we found that capacity between several brands is the same but dimension is different. So use capacity(Liter) to describe size of backpack cover does not make sense. We supply a dimension range of corresponding backpack to clearly show the backpack cover size.Is Discontinued By Manufacturer:NoProduct Dimensions:11.81 x 1.97 x 7.87 inches; 2.82 ouncesItem model number:NZ1717Department:mensDate First Available:July 25, 2017ASIN:B074888Z6SCapacity: 30L-80L are availableSpecially reinforced, keep your backpack and belongings dry from rain, mud and dust.Made of waterproof wear-resisting Nylon material, durable, portable and usefulWith elastic design, it is able to adjust the size according to different backpacksPerfect for outdoor travel, riding, climbing, hiking and so on