High Sierra Composite Backpack, Red Line Treads/Charcoal Black, 19.5x13x8-Inch Large, front-load main compartment; Core organizer compartment with multiple pockets and key fob Primary padded back panel; Zippered media pocket with headphone port; Adjustable compression straps; Reflective strip for added safety Mesh beverage pockets; S-Shaped, yoke style padded VAPEL mesh shoulder straps Attach extra gear with side panel webbing loops Materials: Shiny Mini-Waffle Weave, Duralite, Ripstop, 600-denier Duralite