Eforstore Backpack Rain Cover Waterproof Pack Covers Nylon Rucksack Bag Rainproof Dust Raincover for Outdoor Hiking Camping Traveling Cycling Climbing Riding Sports Material: Nylon Oxford. Capacity: 35L/45L/60L/70L/80L. It is durable, portable and useful. Specially reinforced, keep your backpack and belongings dry from rain, mud and dust. Perfect for outdoor travel, riding, climbing, hiking and so on.