It supplies more water capacity with our 102 oz OMEGA baffled reservoir for quick and easy filling and cleaning. Plus it gives you 1.5 liters (90 cu in) of integrated storage in two side zip pockets to hold such essentials as radio, clip and flashlight. This ergonomic, low profile unit is perfect for tight quarters and has everything necessary to make it the ultimate tactical system. Features: Quick and easy external fill via the massive OMEGA Access Port. Ventilated back panel to keep you cool and comfortable all day. Positive shut-off HydroLock valve. Tough, abrasion-resistant 1000D Cordura exterior. Convenient Velcro strap management. Low-profile 102 oz AeroForm baffled OMEGA Reservoir. Specifications: Capacity: 102 oz (3.1 liters), Total Cargo: 90 cu in (1.47 liters), Empty Weight: 1 lb 9 oz (.71 kilograms)