The HyperFlow microfilter utilizes the latest Hollow Fiber Technology and our most advanced engineering to make water treatment so small and so easy to use, it will change the way you travel in the backcountry. Its ergonomic design, diminutive size and tool-free maintainability make it just as appropriate on day trips as it is on multi-day excursions. Add a filtration rate of 3-liters per minute and you’ve got the most efficient microfilter ever created. Also included is a Quick Connect bottle adaptor—allowing direct connection to all MSR® hydration products and a variety of other "wide mouth" containers—and an advanced prefilter to prolong the life of your filter.

Effective against protozoa
Effective against bacteria
Effective against particulate
Weight: 7.8 oz / 221 g
Width: 3.5 in / 8.3 cm
Length: 7 in / 17.8 cm
Filter media: Hollow Fiber
Filter pore size: 0.2 microns
Flow (L/min): 3 liters per min
Flow (strokes per liter): 20
Cartridge life: 1000 liters
Field cleanable
Field maintainable
Made in Seattle, USA
Water Bottle Adapter