Ogio Reservoir/Bladder 1LThe easy to use athletic reservoir fits right into your hydration pack. It holds 32 ounces or 1 liters of fluid and can be used as a replacement reservoir or your very first one. Markings on the front let you to track your fluid intake, and you can mix your favorite drink or electrolytes. This athletic reservoir is BPA free, odor free and taste free, and the easy flow bite valve makes hydrating simple. Keep your hands free and your hydration up when