Hydration Capacity: 100 oz (3 L * Total Capacity: 1281 cu in (21 L * Designed for women: Shorter torso length, S-curved shoulder harness for more comfortable carry, harness hardware moved to base of pack to reduce potential friction points, soft-touch fabric harness lining for added comfort next to bare skin, fully adjustable sternum strap for added stability, narrower harness spacing to fit women"s shoulders * Reservoir Features: Quick Link System, 14 turn - easy openclose cap, lightweight fillport, dryer arms, center baffling and low-profile design, patented Big Bite Valve, HydroGuard technology, insulated PureFlow tube, easy-to-clean wide-mouth opening * BACK PANEL: Air Director