The Survival Convertube kit together with the Sawyer filter is a complete gadget in the world of hydration systems. Thanks to three adapters of different widths (diameter 2x26, 30 and 63 mm), you can make a hydration system from almost any bottle. The kit includes a Sawyer filter, four adapters, a tube with a Helix bite valve, a tube intended for inside the bottle (35 cm long) and a Dirt Shield cap. Fits classic PET bottles, Evian, Nalgene and many others. The water filter eliminates 99.9% of bacteria and protozoa, captures particles with a size of 0.1 µm and is able to filter up to 1.7 l of water per minute. It can be cleaned by backwashing with the possibility of repeated use - the life of the filter is up to 375,000 l of water.