SWIG63: Hands-Free Adapter Cap for Bottles

Why carry your water on your back?   Want to move your hydration to your bike without losing the convenience of a bite-valve?  Use one of these super simple, but effective Adapter Caps and you can! The SWIG63 Cap makes most* 63mm widemouth bottles hydration hose friendly.  The secret is a tiny silicone air-valve that relieves the vacuum pressure without leaking any water.  So now you can sip from your favorite bottle hands-free. Measure your bottle opening, if its 63mm in diameter and has universal threads (Nalgene standard) then this adapter most likely will fit *Fits all 63mm (Widemouth) Nalgene, CamelBak, Polar and Hydraflask bottles *Does not fit 63mm Specialized, Kleen Kanteen or Zefal bottles Makes metal, plastic and insulated bottles compatible with any hydration tube Awesome accessory for almost any cycling discipline: ultra-races to bikepacking 100% BPA free Two-piece cap design makes it easy to screw on/off and to clean Use your own Tube and Bite Valve or choose an optional