Built for women, the Nathan VaporShadow 2L Vest is a high-capacity vest designed to fit a woman's torso perfectly. The insulated bladder pocket blocks transfer of body heat to liquid contents to keep your hydration the temperature you wanted it to be. A 3D Cooling Channel delivers maximum breathability and comfort. Carry your electrolyte tabs in the pill pocket and your phone in the phone pocket. Dual stabilization system compresses bladder and load. Multiple zippered compartments and stretch mesh stash pockets for organization and increased capacity. Side stretch mesh pockets hold up to .75 liters. Rear external shock cord for increased capacity. Comes with a removable safety whistle. One front-zip smartphone compatible pocket and stash pocket over left front pocket fits several gels. Features trekking pole clips and 22 oz. Tru-Flex bottle pockets.