Columbia Clackamas Daypack Organizer compartment with soft-lined and zippered mesh compartment, and a roomy main compartment with padded laptop sleeve. Raised padded back with air channel, contoured shoulder straps with high-density foam and breathable air mesh, and sternum strap with garage to stow straps when not in use. Gathered side pockets, reflective safety accents, and two vertical front accessory pockets. Hydration compatible. Dimensions: 18.1 in x 12.3 in x 6.3 in, Storage Capacity: 20.8 L (1268 cu. in), Weight: 1.5 lbs, Lifetime Warranty