Strap this to any hydration pack to insulate and product your drink tube and bite valve. Inside this garage is an internal pocket to load hand warmers to help reduce the possibility of your bite valve freezing in very cold weather.Insulated chamber that works with any hydration pack.
Stall for hand-warmer packet to prevent bite valve freezing.
Insulated Tube and Bite Valve Cover
Insulated plug-and-play tube