For Faster Delivery, Select Express Shipping at Checkout*
Express to Contiguous USA
3 business days
Express to AK, HI
4 business days
Express to Canada
3-6 business days
*Express shipping may not be available for some items at checkout.
We're sorry, our Customer Review feature is currently unavailable. You may try refreshing the page or try again later.
Write a Review
A camping water filter has to be easy to use, fast and 100% effective at eliminating pathogens. The MSR AutoFlow Gravity Microfilter excels at all three requirements, making it a great choice for backcountry adventures.
Weight: 11.1 oz.
Capacity: 4 liters.
Filters up to 1.75 liters per minute.
Maintain flow rates easily in the field by backflushing repeatedly without disassembling.
Filter directly into most bottles or reservoirs with included Universal Bottle Adapter.
Meets NSF requirements for removal of bacteria and protozoa.
Made in USA of imported materials.
Why We Love It
Convenience and ease of use are the hallmarks of this filter. Just fill the bag, hang in a tree and let gravity push the water through the hollow fiber filter at a rate of up to 1.75 liters per minute. 4-liter capacity is ideal for base camp and groups. It also features tool-free cleaning so you can maintain high flow rates in the field.