Our lightest, smallest, and fastest-pumping filter. The best choice for fast and light backcountry use.Learn more about the MSR HyperFlow Microfilter here:https://www.msrgear.com/water-treatment/filters-and-purifiers/hyperflow-microfilter/56500.html

The MSR HyperFlow Microfilter will change the way you travel in the backcountry. Pumps more than 3 liters per minute or one liter every 20 strokes. MSR says:The HyperFlow microfilter utilizes the latest Hollow Fiber Te