This product is ineligible for discount codes. Internal Volume: 850 cu.in. (14 Liters). Four weatherproof exterior pockets. Included fully removable tool-roll with four zippered pockets. Secure roll-top main closure can also be used in the flap-down configuration. Compatible with most hydration reservoirs up to 3 liters including Camelbak, Hydrapak, Platypus, and Osprey/Nalgene. Full zippered opening on hydration pocket allows easy access to reservoir. Adjustable waist strap and shoulder strap attachments. Proudly made in the USA.