The Sling Backpack is a feature-packed sling to give you the features you need. It features a phone and accessory vertical pocket, allowing you to have quick access to these needed items. The double zipper main pocket and front zip pocket allow you to carry your needed essentials in the 9 L sling. The padded polyester shoulder strap and the adjustable and removable strap allow for a comfortable carry on either shoulder with this messenger bag. It is unisex and can be used by an adult or teen.