The Nathan Pinnacle Featherlite 1.5 L Running Vest is a hydration vest for running. Built for the trail, this vest is incredibly light and breathable for comfort while you put in the work, while leaving your hands free and drinks and snacks close by. This unisex vest features side adjustments and front sternum straps for dialing in the fit and hugging the body close to prevent bounce. The four pockets fit bottles or flasks up to 20 ounces, while only one 14-ounce NATHAN x HydraPak Soft Flask is included.