MSR AutoFlow Gravity Microfilter, 4L

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The supreme ease of the AutoFlow Gravity Filter has converted many a backcountry traveler to pump-free water filtration. This year, weve not only improved the food-grade lining for better tasting water, but weve made the overall design far more compact so that the luxury of effortless filtration and storage comes with no bulky packing penalties.


In addition, we're offering a smaller 2.0L AutoFlow filter to provide backpacking duos a system sized optimally for two.


Rolls Tighter: New reservoir made of durable fi lm and an updated closure system reduce bulk for discreet packing.

Better Tasting: Improved food-grade lining ensures better tasting water.

No Pumping: Uses the power of gravity to fi lter 1.75 liters per minute, offering the efficiency to multi-task at camp.

System Convenience: Combines water collection, storage and filtration into one compact system.

Field-Maintainable: Can be cleaned easily and repeatedly for flow recovery.

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