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MSR TrailShot Pocket-Sized Filter — Specs & Analysis
Manufacturer specifications, compared against every other hydration in our database. We do not test gear in the field — we measure, verify, and compare.
MSR's TrailShot is a handheld pump filter with an integrated intake hose that drops directly into any water source. The pump action fills bottles quickly, and the hollow-fiber filter removes bacteria and protozoa. No squeezing or gravity hang required.
Who Is the MSR TrailShot Pocket-Sized Filter Best For?
Riders who want to filter water directly from sources without extra reservoirs. If that describes your riding style, the TrailShot Pocket-Sized Filter should be at the top of your shortlist. It sits in the Hydration category alongside 15 other products we track.
How It Compares
At 142g and $65, the TrailShot Pocket-Sized Filter is 105g heavier than the lightest option in this category (the Vapur Eclipse 1L at 37g). The most budget-friendly option is the Vapur Eclipse 1L at $13.
The price-to-weight ratio comes in at $46 per 100g — a premium price point, but you're paying for quality, materials, and design that justify the investment for serious bikepackers.
What We Like
- +Pump directly from streams and puddles without containers
- +No need for gravity setup or squeezing
- +Compact enough to fit in a jersey pocket
Watch Out For
- −Slower flow rate than squeeze-style filters
- −Pump mechanism can fatigue hands on large fills
- −Does not remove viruses
The Bottom Line
We haven't scored the MSR TrailShot Pocket-Sized Filter, and neither has anyone else we can cite. It's here for its verified specifications and dimensions, which is what the fit tools run on — a score is an editorial judgement, and we don't hand one out until someone has a basis for it. What this page can tell you is measured: 142g, $65, and how both sit against every other hydration product we track.
Weight checked against the manufacturer on 25 August 2026 — see the source. The price above has not.
Specifications and dimensions come from the sources listed above. Where a page draws on first-hand riding, it says so.
How it compares
Against the 16 hydration products we hold published specs for.
At 142g the TrailShot Pocket-Sized Filter is lighter than 6 of 15 alternatives we track. The category median is 116g.
At $65 it undercuts 3 of 15 of them, against a median of $45. That works out at $46 per 100g — above the $35 median for hydration products.
Weight and price come from published specifications. Cost per 100g is a blunt measure — it rewards light gear and says nothing about durability or whether the thing works — so treat it as one input, not a verdict.
More in Hydration
Water bottles, filters, and bladder systems for staying hydrated on long rides.