MSR HyperFlow Backcountry Water Filter

- Microfilter utilizes Hollow Fiber Technology and advanced engineering to make water treatment highly mobile and easy to use - Ergonomic design, diminutive size and tool-free maintainability make it just as appropriate on day trips as it is on multi-day excursions - Filtration rate of three liters per minute; includes Quick Connect bottle adaptor, allowing direct connection to all MSR hydration products and a variety of other "wide mouth" containers - Hollow fiber filter with 0.2-micron pores, effective against protozoa, bacteria, and particulate; three liters per minute flow and 20 strokes per liter of water - Includes limited lifetime manufacturer's warranty; made in Seattle, WA

From the manufacturer

Mountain Safety Research

MSR HyperFlow Microfilter

MSR Purifiers & Filters

Safe Water Starts With Science

MSR has always been a company of engineers, inventors and unruly dreamers. Larry Penberthy started the company in 1969 on a personal crusade against unsafe equipment. Today, we’re still an intrepid team obsessed with creating the most reliable, high-performance gear possible. We believe the greatest innovations are inspired by and made for the world’s unruly dreamers and their explorations.

Photo By: Scott Rinckenberger

Pumps more than 3 liters per minute or one liter every 20 strokes.

Ultralight at just 7.8 oz. (221 g). and ultra-small at just 7x3.5 in. ( 17.8 x 8.3 cm) makes it easy to take along even when space is at a premium.

Hollow fiber filter meets NSF protocol P231 for removal of protozoa and bacteria. Treats up to 1500 liters.

Made in the USA of US and Imported Materials.

From our fast-and-light microfilters to our gravity-powered systems, we apply the latest technologies and rigorous testing to assure you safe water on every adventure.

We invest in an on-site water lab with staff scientists, and individually test our devices to ensure they deliver greater safety and ease of use.

Every MSR filter and purifier features: