Source

Convertube + Sawyer filter

<p>With the help of the Cobvertube + Saywer Filter drinking system from Source, almost any drinking bottle can be quickly and easily converted into a drinking system. In addition, the tube is kitted out with a Sawyer filter to neutralize harmful bacteria so that the bottle can be filled up with water made from lakes, rivers or fountains while on the go. Four different adapters allow it to be fitted to bottles of different sizes and the adjustable hose can also be adapted to the size of the bottle to get to the last sip.&nbsp;</p>