The Katadyn Pocket Filter is a water filter for backpacking. Safe drinking water is paramount when you're living outdoors. Sometimes your water comes from a flowing spring, sometimes a funky-looking swamp. Either way, you need a way to filter out the bacteria, protozoa, and other diseases. In steps the power of this ceramic depth filter, and it pumps out clean water at a clip of 1 liter per minute. Drink safely, stay healthy, and hydrated.