Waterproof: The sling bag is made of durable polyester and is waterproof. Good structure, light weight, versatile and durable.3 Zipped Pockets: Three main zippered pockets, one small zippered pocket and one anti-theft pocket. The spacious compartment holds your phone, 7.9" tablet, wallet, keys, ID, credit cards, snacks.External USB Port: Easily charge your phone, tablet, iPad and other devices without opening the backpack.Adjustable shoulder straps: The shoulder bag is adjustable, suitable for ordinary people and adults. Can be used as a crossbody bag, chest bag, shoulder bag, crossbody bag and travel bag.Universal: Messenger bag for outdoor sports: hiking, camping, hiking, running, cycling, etc.