Nathan Sports HPL #020 Hydration Race Vest, Grey: * 3-way propulsion harness * Lightweight, breathable wall mesh with soft perimeter binding * 2-liter hydration bladder with a Slideseal top closure * Dual front pockets: 1 mesh holster, 1 zippered * Front power stretch mesh pocket * 2 zippered rear compartments * Shock cord with 1-pull tension lock for jacket or gloves * Vertically adjustable sternum strap with tube clip * Total capacity: 400 cu in * Cargo capacity: 275 cu in * Dry weight: 10.0 oz * Adjustable fit * Material: plastic, mesh, nylon, polyester