High Sierra Mayhem Backpack Large, easy access front pouch, made of VAPEL reverse mesh, holds extra gear. Large zippered side compartments hold a beverage or extra gear. Premium organizer compartment with mesh pocket, lidded media pocket, pen pockets, and key fob. Reflective loop to attach extra gear. Zippered loft pocket holds sunglasses or other necessities. Adjustable side compression straps secure heavy loads and additional gear Yoke-style, S-shaped shoulder straps have comfortable HEX-VENT mesh AIRFLOW padding with COLLAR-COMFORT edge. Deluxe back panel with HEX-VENT mesh AIRFLOW padding for extra comfort. Padded bottom panel protects bag's contents Materials: Diamond Ripstop, Shiny Mini-Waffle Weave, Mini-Hexagon Ripstop Size: 19.5" x 13" x 10"Capacity: 2565 cubic-Inch Large, multi-compartment design.