Front composite Molle and 500D Rip-Stop Cordura fabric make this pack one serious mother. | SpecificationsCapacity / Reservoir: 100 oz (3L) Mil Spec Antidote Long | Dimensions: 20 in x 14 in x 13.5 in (51 cm x 36 cm x 35 cm) | Volume Cargo: 2258 cu in (37L) | Total Volume: 2440 cu in (40L) | Weight w/ Empty Reservoir: 3.9 lbs (1.78 kg) | Materials500D Ripstop Cordura fabric front panel, gussets and shoulder harness front side | 420D high density nylon on shoulder harness back side, and back panel | 10 mm EVA foam shoulder harness | 3 mm PE foam for hydration compartment divider | 210D Poly lining | Nylon webbing | 14 mm and 5 mm closed cell PE foam on back panel.

Reservoir

100 oz (3L) Mil Spec Antidote Long reservoir | 42 in (107 cm) PureFlow Tube | Insulated tube cover | Bite valve cover | Black Big Bite Valve | Black QL HydroLock | Pack FeaturesLow-profile Composite MOLLE panel on front for secure attachment of accessory pouches | Air Director back panel provides superior ventilation | Organizer in front pocket for essential items | 50 mm webbing waistbelt with lumbar adjustment stows when not in use | Three lash points in main compartment | Side-release buckles for quick release from shoulder harness, compression straps and waist belt | Zippered back panel access makes loading a full reservoir into hydration compartment easy | Upper and lower compression straps | D-Rings and webbing loops for tube management | Adjustable sternum strap | Hook-and-loop strap management | Glasses, goggles and NVG pocket with external access | MOLLE attachment system integrated to bottom of boot | Zippered mesh pocket for keys, clips, etc. | Add or remove name tags and unit badges quickly with integrated hook-and-loop panel | Nylon webbing with hanger loop | Grommet drain holes located at bottom of main compartment | Lightweight, durable 500D Ripstop Cordura fabric | Reservoir FeaturesMil Spec Antidote 100 oz Long, Low-Profile Baffled Reservoir | Quick Link Exit Port & Drink Tube: clicks off for faster refilling with auto shut-off | QL HydroLock Bite Valve Adapter: easy, one-handed manual on/off water flow | Antidote air-light fillport: industry's largest opening with 1/4 turn open/close for quick, secure seal that can't be over-tightened | Insulated drink tube cover to maintain water temperature and protect tube from harmful UV rays | Mil Spec Antidote meets the USMC hydration system requirement for tensile strength, puncture resistance and burst resistance.* Details are available upon request.