The Sawyer Products All In One Water Filter lets you filter water using the Sawyer technology absolutely anywhere. The 0.1 micron hollow fiber water filter removes 99.999% of all bacteria and protozoa producing safe, great tasting, clean drinking water. Attach this filter to the included 32oz squeeze bag for fresh water on the go on your backpacking, hiking and mountaineering adventures. Use it with a five gallon water container for clean water at base camp, events, or in your garden shed. You can also attach this versatile filter directly to your water faucet at home for consistently great tasting filtered water!