Capacity - 35L and 45L of two bag covers are available, elastic material around the edge of the cover, it is able to adjust the size according to different backpacks Waterproof - This cover is made from 190t Taffeta, inside is silver coated waterproof layer, PU surface treatment gives you full protection against rain up to 5000mm. The drawstring allows for a snug fit of the cover on your backpack to prevent it from slipping Good Protection - Thanks to its innovative design, your backpack will always stay dry and well protected in all weathers, even in downpours, you can also protect your backpack from rain, mud and dust Durable and Lightweight - Our backpack covers are durable , useful and scratch resistant. With a carrying bag together, which allows you to store it in one piece to avoid loss, easy to store and carry Wide Application - This bag cover will be perfect for outdoor travel air, riding, climbing, hiking, cycling, commuting, etcBackpack Rain Cover Weight: 86g Color: Black Size: 35L & 45L Material: 190T taffeta Protect your backpack from rain, snow, mud and dust and always keep your backpack dry and clean More Sustainable | Water resistant | Multipurpose The Backpack Rain Cover is a must-have necessity for every hiker that wraps your backpack with all-around protection from rain, snow, dirt, dust, fog, scratches to keep your stuff inside the backpack always clean and dry There are two sizes: 35L & 45L This rainproof rain cover is suitable for various backpacks, including camping backpack, hiking backpack, travel backpack, the school backpack, the laptop backpack and many other miscellaneous bags