FilterKeeper

PortaKeeper's 58mm FilterKeeper for Portafilter filters

A similar design to the popular FilterKeeper designed for the Aeropress. Many people have discovered that by placing a 55mm paper filter (size A) at the bottom of their portafilter, it allows for a more even extraction and easier cleanup. Store your 55 (size A + Size J 58.3mm)  portafilter paper filters (even smaller sizes fit great) within arms reach!