These are replacement AEON ear pads for AEON 2 Open. The perforated pads can also be used with AEON 2 Closed for a more "v" shaped (or "fun") response, very similar to the "Harmon curve." These the perforated ear pads are for AEON 2 Open, they may also be used with original AEON Flow Open. Made using the highest quality synthetic leather and featuring improved, more stable memory foam these ear pads will bring a new level of comfort to your headphone. NOTE: AEON Flow Open owners may want to consider the alternate perforated ear pads if a larger soundstage and a more vibrant midrange are desired.