Casual Shoulder/Crossbody Sports Bag Sling Chest Bag Crossbody is easy for carrying: Made From Oxford Cloth Nylon Fabric With Curve Padded Shoulder Straps,Shoulder belt made of honeycomb breathable material,Ergonomic design ensures the dispersion of gravity of the backpack.Waterproof?design brings more convenience to your life.USB 2.0 Charging port design. Use it you could charge your phone conveniently.