Jetflow Eagle Complete Bladder Replacement System Jetflow Manifold adapts any standard water bottles for use in a hydration pack Smartwater, Fiji, Aqufina, Gatorade, Propel, Powerade, Vitamin Water, Sobe, Soda Bottles, Nalgene style and hundreds more can be used Bottles can be re-used and recycled without the cleaning like with a bladder Eliminates fungus growth, funny colors and plastic flavors of a bladder Inexpensive bottle replacement, adapt to your choice of beverage