Bladder not included -P • Zippered front access panel • Long Neck Screw Cap Reservoir compartment • Stowable straps allow unit to slip easily into larger rucks. • Use D-ring attachment points to place unit anywhere • Sternum Strap for added stability. • 1000 denier Cordura® nylon shell and heavy duty, double-stitched construction • D-rings keeps drinking tube close by • Convenient Velcro® strap management • Quick-release straps stow inside built-in pockets • Capacity: 100 oz (3.0 L). • Volume, Cargo Capacity: 126 c.I. • Dimensions: 18.5'' x 8'' x 4'' • Weight: Empty Reservoir – 1.8lbs (0.81 kg) • Filled Reservoir – 8 lbs (3.64 kg) • Optional Chemical Resistant Reservoir will slip into the back pocket easily for extreme conditions.