Rokk Arete Computer Pack (18 x 12 x 8.5-Inch with 1800 cu. in Capacity) 1800-cubic-inch capacity daypack with three main compartments and a padded, fleece computer pocket Comfort-Tec gel beads in the shoulder straps and cushioned back panel with Air Comfort System air channels for ventilation Mp3 pocket with headphone port and waterproof zipper; sunglass holder on shoulder strap Front pocket organizer; two side mesh pockets with toggle bungee cinches Pack measures 18 by 12 by 8.5 inches; lifetime warranty