RELIABLE & DURABLE MATERIAL: 17.1 x 11.1 x 6.1 inches, Capacity: 24L; The Wakizashi Backpack is made of high density fabric-durable (100% Polyester) and has 1475 cu. inches MOLLE SYSTEM: Molle webbing throughout for attaching additional tactical pouches or gear COMFORTABLE & FUNCTIONAL: Heavy duty zippers and utility-style cord pulls, load compression system on both sides, top carry handle, velcro patch holder, ventilated mesh padded back area & shoulder strap,breathable and comfortable.