Sling Backpack is perfect for carrying essential office, gym or travel gear. Features an adjustable padded single strap, large front zippered pocket with organizer, handy mesh beverage holder, and side pocket. Concealed zipper on main compartment 600D polyester with dobby nylon trim Whether you're headed to the gym or need some extra luggage for your next vacation, this backpack will make you look and feel fan pride wherever you go.