MSR TrailShot Pocket-Sized Water Filter

The MSR TrailShot water filter is built for the hiker who doesn't want to stop moving to get clean water. You squat over a stream or puddle, submerge the pick-up tube, and squeeze — a liter per minute flows through the hollow-fiber filter without removing the bottle from your pack. At 2.6 ounces, it barely registers in a hip-belt pocket.

Why MSR TrailShot Works Where Other Filters Feel Like Work

Most filters require two hands, a hanging bag, or a dedicated clean container. The TrailShot is designed for one-handed operation: point, squeeze, drink. The discrete filter element removes bacteria and protozoa to 0.2 microns, meeting NSF Protocol P231 standards. A backflush syringe is included to restore flow rate when the filter starts to slow on sediment-heavy water.

• Weighs 2.6 oz — fits in a hip pocket without adding noticeable load
• 1-liter-per-minute flow rate — fast enough to keep pace with trail movement
• Removes bacteria and protozoa to NSF P231 standard, 0.2 micron filtration
• Works from any freshwater source: streams, lakes, puddles, even snow melt
• Backflush syringe included to restore flow rate in the field
• Compatible with standard hydration reservoirs and wide-mouth bottles

If your current filter slows you down at every water source, the TrailShot is the one worth switching to for fast-and-light day hiking, trail running, and hunting applications where stopping to set up a gravity filter isn't practical.