HydraPak UltraFlask Speed 500 Water Bottle - 17 fl. oz.
HydraPak UltraFlask Speed 500 Water Bottle - 17 fl. oz., Designed for quick pit stops at aid stations, this HydraPak UltraFlask Speed 500 water bottle shrinks as you drink to minimize sloshing and feels so light you might even forget you brought it.