Th Camelbak eddy Hands-Free Adapter converts all sizes of the CamelBak® eddy Bottles into a hands-free hydration system. Attaches multi-layered PureFlow™ tube to the bottle and the keeps water tasting fresh. Perfect for using your bottle when it's stowed in your pack. Shut-off valve lets you control liquid flow. Turn on when you need it; off when you don't. 90-degree bend perfectly positions the Big Bite™ Valve for easy drinking.