"The MSR Trailshot Microfilter Pocket Water Filter gives you clean water all day without the weight. This MSR portable water filter weighs only 5 oz., and is designed to store in your stash pocket. When you need fresh water, you can instantly filter water and drink directly from sources along the trail. Easy 1-handed operation filters 1L in 60 seconds, so you can fill your water bottles and get back on the trail quickly. Meets U.S. EPA drinking water standards and NSF protocol P231 for removal of 99.9999% of bacteria, 99.99% of protozoa, and particulates. The MSR Trailshot Microfilter Pocket Water Filter is ideal for backpackers, cyclists, trail runners, and outdoor adventurers. 6""L x 2.4""W. Made in U.S.A.Manufacturer model #: 9385. Pocket-sized water filter Drink directly from water sources Single-hand operation fills 1L bottles in 60 seconds Meets U.S. EPA drinking water standards for removal of bacteria, protozoa, and particulates"