The conical drippers by KōNO may have a very simple design, but in this simplicity lie its benefits. There are no ridges in the inside of the filter except from the bottom part. This makes for less seepage from between the paper filter and the dripper. The colored plastic feels solid and doesn't interfere with the temperature.
KōNO has been a leading company for coffee equipment since 1925 and are maybe best known for developing the syphon coffee brewer.
