Features:Could be used as a whole bag, and it's also easy to detach to become three independentlybags??one backpack and two single shoulder bags.Bag set is 75L, high capacity could hold many things, make your cycling more relaxing and colorful.Made by polyester fibre and PVC, resistant to tearing and easy to clean.Water-resistant cloth and zippers, a free waterproof cover for you, without any worry of raining when cycling.Three light reflection strips with a tail light hook, making the cycling more security.Could be matched with different kinds of bikes, such as mountain bike, folding bike, travelling bike and etc.