MSR Trailshot Filter

• Tested: Meets U.S. EPA drinking water standards* and NSF protocol P231 for removal of bacteria (99.9999%), protozoa (99.9%), and particulates.
• Pocket-Sized & Light: Like small water bottles, energy chews, mini bike pumps, and tubes, this 142 g (5 oz.) filter disappears in stash pockets.
• Instant Hydration: Drink directly from the source—without lying in the dirt—and refill your bottles or hydration reservoir with clean water.

• Quick-Deploy: Zero set-up and simple one-handed operation fills 1-liter bottles in 60 seconds.
• Simple to Clean: A few shakes helps restore flow rates in the field; no tools required.

*U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers