Outdoor Products Vortex Day Pack, 30-Liter Storage 100% Polyester Imported Durable, stylish 30-liter daypack with variety of storage options; great for school, gym, or hitting the trail Two oversized compartments hold gear; front pocket with built-in organizer and keyclip Adjustable waist and sternum straps take weight off shoulders; side compression straps balance the load Deluxe cool padded back for added ventilation; hydration compatible (reservoir sold separately) Measures 12.3 x 19.7 x 7.4 inches and weighs less than 2 pounds; backed by the Outdoor Products Plain + Simple Lifetime Guarantee