This 20L Cycling Backpack includes many compartments to provide roomy storage space for your items. It is made of premium nylon fabric which makes the backpack lightweight, water and tear resistant. The adjustable straps and padded mesh back are comfortable, reflective elements are safe for riding at night and the mesh cover holds your helmet. With a rain cover, you'll never worry about your valuables ruined in rainy days. It is a great sport backpack for all kinds of outdoor activities such as cycling, camping, climbing, hiking, traveling, etc.