Fits into Plug-N-Play Caps and Connectors to create a direct connection between your 28mm backcountry water filter and HydraPak Seeker storage containers, Flux bottles and reservoirs.

Compatible with most 28mm threaded water filters. Must be paired with a HydraPak Plug-N-Play connection in order to work. 

Example image pairs Sawyer Filter with the Filter Adapter and the Plug n play cap