Katadyn BeFree AC 1L Water Filter Bottle Activated Carbon Removes BacteriaStay hydrated on every adventure with the Katadyn BeFree AC 1. 0L. This Katadyn water filter bottle delivers clean drinking water anywhere. It suits hiking, travel, and emergency use. The bottle stays lightweight and compact. It folds flat when empty. The two stage filter system works fast and efficiently: 0. 1 micron hollow fiber membrane removes 99. 9% of bacteria and protozoa Activated carbon capsule improves taste Carbon reduces chlorine and