Source

Convertube Sigg/Nalgene/Evian/PET

<p>The Source Convertube transforms your drinking bottle into a drinking system.</p> <p>The four adapters supplied fit a standard PET bottle (28mm), a mineral water bottle (24mm), a Sigg bottle (42mm) and a Nalgene bottle (63mm). Furthermore, you will of course receive the inner tube with Helix&trade; drinking valve and a Dirt Shiel&trade; protective cap. <p>&nbsp;</p>