The High Sierra Fat Boy is a pack that can swallow all of your gear. Featuring a multi-compartment design, the Fat Boy provides nearly 2400 cubic inches of storage and superior organization. Suspension built into the shoulder straps, a padded back panel and side compression straps provide unmatched comfort when hauling your heaviest gear. Made from Duralite Ripstop, 600-denier Duralite, Waffle Weave, 1000-denier Duralite. S-shaped shoulder straps have comfortable VAPEL mesh AIRFLOW padding with suspension system and integrated media/cell phone pocket. Padded back panel for added comfort. Forward zip compartment includes premium organization and a key fob. Two center zippered compartments are roomy enough for all of your daily gear including books and files.