28mm Filter Kit

Access potable water anywhere. Our unique and versatile 28MM inline filter threads directly onto popular 28MM opening bottles and flasks and is equally easy to install in any of our reservoirs and caps with a Plug-N-Play connect system. This versatile connectivity makes our filter a great backcountry water treatment solution whether you are squeezing your water from a Stow into another bottle, gravity filtering your water out of a Seeker or Pioneer water storage bag or filtering as you drink on the go from a Stow or HydraPak reservoir.

Easy To Use

High Flow

Lightweight And Compact

Weight: 47 g / 1.6 oz (filter only)

Dimensions: 34 mm x 129 mm / 1.3 in x 5.1 in

Material: PP/POM, EPDM, Silicone, Hollow Fiber

Care: Avoid freezing filter. Freezing may ruin the hollow fiber membrane. If in freezing conditions we recommend you keep the filter in your pocket or near your body to prevent freezing.

LIGHT & COMPACT

At only 47 grams, our filter is one of the lightest filter options available. It is small enough to fit inline in a wide variety of packs and takes up minimal pack space when not in use.

28MM THREAD COMPATIBLE

Easily thread the filter onto some of the most popular backpacking bottles and flasks including the HydraPak Stow 500ML and 1L and the 1L Smart Water Bottle.

PLUG-N-PLAY COMPATIBLE

Easily connect and disconnect the filter from the Plug-N-Play ports in reservoirs and caps.

FAST & SAFE FILTRATION

The integrated filter removes Escherichia coli bacteria, Cryptosporidium parvum cysts, and Giardia Lamblia from approximately 1,500 liters of water at a rate of >1L per minute*.

* Effectively removes common waterborne bacteria, such asE.coli (99.9999%), and parasitic cysts (99.9999%) per NSF 42.

INCLUDED CAP ADAPTER

Plugs into filter outlet allowing user to thread on their Stow or Smart Water Bottle cap.

INCLUDED BACKFLUSH ADAPTER

Plugs into filter outlet and threads onto a HydraPak Stow or bottle of clean water for backflushing the filter in order to restore its flow rate.