Backcountry Filtration Bundle

$97.68 ~~$132~~ In stock

This bundle includes our unique and versatile 28mm filter kit which can be threaded directly onto the 28mm opening of each Stow bottle or quickly paired with our best-selling Contour 2L hydration reservoir. This versatile connectivity makes our filter a great backcountry water treatment solution whether you are squeezing your water from your 1L Stow into another container or filtering as you drink on the go from your reservoir or smaller Stow 500ml bottle.

FILTER FACT SHEET | FILTER USER MANUAL

Included:

28 MM Filter Kit
2L Contour
1L Stow
500ML Stow

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Customer Reviews (4.8 / 5 · 5 reviews)

Robert ★★★★★ Oct 18, 2026

The threading onto the Stow bottle is so smooth, no leaks or fiddly alignment even with wet hands. Swapping it over to the Contour reservoir mid-hike took about ten seconds, which made the whole bundle feel genuinely versatile.

Harper X. ★★★★★ Oct 14, 2026

Took this on a three-day trip and filtering straight from the bottle saved me from carrying a separate pump setup. The kit screws on tight with no leaks, which was my main worry. Filled up from a creek and it worked exactly like it should.

Scarlett E. ★★★★★ Oct 13, 2026

The 28mm threading is what sold me — it screws straight onto my Stow bottle with zero fuss, no adapters rattling around in my pack. Paired it with the 2L reservoir on a dusty trail day and the flow stayed smooth the whole time.