Head-to-head · Best Backpacking Water Filters

Katadyn BeFree 1.0L vs MSR TrailShot

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Katadyn BeFree 1.0L comes out ahead by a narrow margin (4.6 vs 4.4). The gap is mostly about Trail runners, fast-packers, and ultralight hikers who want the lightest scoop-and-go filter for drinking on the move. — read the strengths below before deciding.

Higher ratedRanked #3 in Best Backpacking Water Filters

Katadyn BeFree 1.0L

4.6

$39.95as of Jun 7

The Katadyn BeFree is the go-to for hikers who want to scoop, drink, and keep moving. CleverHiker named it their best ultralight filter and GearJunkie its best for trail running, both citing an incredible flow rate for such a tiny, light system. The soft flask fills fast and the membrane swishes clean without tools. Its filter life is short and the flask is less rugged, but for fast, light, on-the-go hydration it is the standout.

Strengths

— Incredibly fast flow for its size, ideal for scoop-and-go drinking on the move
— Very light at about 3.4 oz for the whole kit
— Wide-mouth soft flask fills quickly from lakes and streams

Watch-outs

— Short 1,000-liter filter lifespan like the QuickDraw
— Soft flask is less durable and harder to refill from shallow sources
— Flask threading is proprietary, limiting bottle compatibility

$39.95 · Check Price on Amazon Full review →

Ranked #5 in Best Backpacking Water Filters

MSR TrailShot

4.4

$62.99as of May 29

The MSR TrailShot is the pocket pump for hikers who deal with shallow, hard-to-reach water. CleverHiker rated it 4.3 of 5 and OutdoorGearLab 77, both praising its ability to draw from puddles and trickles via a hose, ideal for drought-prone trails and trail running. It is compact, has a longer filter life than the BeFree, and cleans by shaking. Pumping is more work for large volumes, so it is a personal on-the-go tool, not a group filter.

Strengths

— Pump-and-hose design draws water from shallow streams and puddles other filters can't reach
— Compact and pocketable at 5.6 oz for fast, on-the-go drinking
— Decent 2,000-liter filter life, double the BeFree and QuickDraw

Watch-outs

— Manual pumping is more effort than gravity or scoop-and-go for large volumes
— Flow of about 1 L per minute is slower than the squeeze filters
— Not designed for filling for a group

$62.99 · Check Price on Amazon Full review →

How they stack up

Katadyn BeFree 1.0L

Lighter and faster-filling for on-the-move drinking than the Sawyer Squeeze or Platypus QuickDraw, but shares the QuickDraw's short 1,000-liter life and is far less durable than either; it is a personal flask filter, not a group system like the Platypus GravityWorks 4L.

MSR TrailShot

Reaches shallow sources the squeeze-based Sawyer Squeeze, Katadyn BeFree, and Platypus QuickDraw struggle with via its hose and pump, and its 2,000-liter filter doubles the BeFree and QuickDraw; it is a personal pump rather than a hands-free group system like the Platypus GravityWorks 4L.

Specs side-by-side

Spec	Katadyn BeFree 1.0L	MSR TrailShot
Type	Hollow-fiber flask	Pump (squeeze-bulb) hollow-fiber
Filtration	0.1 micron	0.2 micron
Weight	3.4 oz (kit)	5.6 oz
Capacity	1.0 L soft flask	—
Filter Lifespan	1,000 L / 264 gal	2,000 L
Removes	Bacteria, protozoa, sediment	Bacteria, protozoa, sediment
Cleaning	EZ-Clean swish, no tools	Shake-to-clean, no tools
Freeze Safe	No	No
Flow Rate	—	~1 L per 1 min 6 sec (tested)

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