IIoport 2 Packs Backpack Rain Cover for Hiking Camping Traveling 20L to 80L Ultra-light weight and super flexible,can be adjusted to suit for your backpacks. Seamless construction for weather-tight protection It is durable, portable and useful.Perfect for outdoor, travel, riding, climbing. Capacity: Fit for 20L - 80L Backpack Package Included: 2x IIoport Backpack Waterproof Rainproof Cover