MSR Trail Base Filter Kit
This system provides gravity filtration at camp plus a mini-filter for the trail. The kit includes two bags - a clean water and dirty water bag, plus the detachable filter and hoses. The trail filter quick-connects to the gravity system. Hang the dirty water bag in a tree and watch the clean water bag fill up without you having to pump. The clean water bag can also be used as a reservoir if you wish to carry water with you.
Filter: 0.2 micron hollow fiber
Effective against (99.99%): bacteria, protozoa
Output: approx 1L per minute
Filter life: up to 1500 L