MSR B-Line Hydration Pack - Women's Internal and external tool organization with up to 5L of storage Comes with Platypus 3L Big zip hydration reservoir with Magnetic hose retention and multiple hose Routing options Quick access hip pockets, helmet carry, 2 pump sleeves, commuter light loop and external stash pockets Designed to work with a wide range of body types and torso Lengths, the ridge air back panel keeps you cool and comfortable all day long Long-track sternum strap for tailored adjustments and ergonomic shoulder straps for increased comfort