They have become unusable. Exakte Größe, exakte Verarbeitung, exakter Typ. I used three, and its quite solid on my wall. There is no cushion in heel whatsoever and I very small arch support. She can walk on them alright. So, I bought 3 pair for myself and sisters. Id say the only redeeming qualities of this unit are the Mic boom, the sound quality, Bluetooth ability and battery life but they arent that much better than a $80 Corsair. I cannot believe anyone would say these have moderate arch support. Fastest 0-60 has been a 4. MY issue was with the ESD part.