Klau Tennis Racquet Backpack Size:L*W*H(3.1"*11.8"*22.8") or (8cm*30cm*58cm);The Maximum capacity:20L. Materials:800 Sport Nylon Fabric,it has a good waterproof and abrasion resistance. Compact design:Front pocket can hold your wallet,ipad,cellphone,towel;Main pocket can hold a pair of tennis racquet;One of the side pockets can hold your tennis ball and mesh side pocket can hold 550ml water bottle. Using magic velcro close design of the front pocket and one of the side pockets,makes it easier for you to put & get things. Detachable shoulder strap,Can be a single shoulder,but also double shoulders backpack.