The unique and versatile Hydrapak 28MM inline filter threads directly onto popular 28MM opening bottles and flasks and is equally easy to install in any of Hydrapak's reservoirs and caps with a Plug-N-Play™ connect system. This versatile connectivity makes this 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.

Hydrapak 28mm Inline Filter Features:

• 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.

Specs: