28mm Water Filter Kit

HydraPak 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.

Filter Fact Sheet | Filter User Manual

• Easy to Use
• Lightweight & Compact
• High Flow
• 28mm Thread Compatible

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.