Katadyn.

Katadyn is a Swiss water-filtration brand founded in 1928 and the founding marque of today's Katadyn Group. The overland-relevant lineup runs across the BeFree soft-flask squeeze filter, the Hiker Pro and Vario pump filters, the Pocket ceramic pump (the long-running flagship), and the Base Camp Pro gravity bag for group camp use. Ceramic elements and 0.2-micron hollow-fiber cartridges are the two core filtration platforms across the range.