Axis Outdoor SmarTube Cap 63mm

The SmarTube is a drinking system (hydration system), comprised of a drinking tube that fits any standard water bottle. Using SmarTube you eliminate the need to buy a hydration system with a water bladder. Instead you use a standard water bottle you can find anywhere and it's always clean. It's so clear.

Features:

• SmarTube cap for 63 mm Nalgene wide mouth bottle, bike bottles & other containers