Rain cover for backpack: Don't let a drop of water in. It can resist water of 2000mpa hydraulic pressure rate. Strap around middle of bag is excellent feature to secure in wind, 1 storage bag for easy carrying out. Rain cover for rucksack: Dual-layer design, the exterior layer adopts wear-resistant Nylon to avoid scratching and dirt. The inner layer adopts waterproof coating to avoid rain and snow. Adjustable buckle to adjust the cover to fit your backpack. It will make the cover stick to the backpack to avoid falling off. Note: Kindly check the size of your bag size before ordering[Item size: M:30-40L; Easy Storage. It can be easily folded so that you can put it in the side bag of your backpack to save space. Economical Package. You can buy 2 pack at reasonable price. Ideal for Outdoor Activities: Perfect for outdoor travel, riding, climbing, hiking and so on.