Features: Hydration Capacity: 100 oz (3.1 L) Total Volume: 189 cu in (3.1 L) Includes the 100 oz (3L) Mil Spec Antidote Reservoir Pack Weight: 1.1 lbs (.5 kg) with empty reservoir Materials: 500D Cordura Fabric front panel and yoke > 210D Nylon lining > Nylon webbing > 5 mm closed cell foam Pack Dimensions: 16 in x 10 in x 3 in (410 mm x 250 mm x 80 mm)