Yeah it's not an Aerogel. I recently found out that the parent Dunlop company in the UK owns Dunlop everywhere in the world except Japan and Australia. Dunlop Japan is a seperate company that designs their own racquets. If Dunlop Japan or Dunlop Australia want to sell M-Fil's or Aerogels then they have to pay the main Dunlop to manufacture the racquets for them. The only way you would every see the DiaCluster in Europe or the US is if the main Dunlop thought they were good enough to buy from Dunlop Japan.