Compact, lightweight and streamlined, the MSR AutoFlow Gravity water filter cleans up to 1.75 liters a minute, and provides the luxury of effortless water storage and filtration anywhere you roam.

• Operation is simple: fill the 4 liter collection reservoir with dirty water, connect it to the filter with the quick disconnect fitting and let the water flow
• Efficient hollow fiber technology filters up to 1.75 liters per minute
• Lightweight 4-liter system weighs just 11.1 oz.
• Included shut-off clamp lets you control the water flow so you won't waste a drop of clean drinking water
• Quick and easy tool-free cleaning maintains high flow rates on extended expeditions; can be backflushed repeatedly without disassembly to regain flow rates
• Filter directly into most any bottle or reservoir with included universal bottle adapter
• Meets NSF protocol p231 for removal of bacteria (99.9999%) and protozoa (99.9%) from beginning to end of filter life in 'worst-case water'