I have have my ur29 for so many year im not sure how old they be . just recently they start to loose the plastic cover on the ear pad and the headset . I be really bummed because they have become a good friend and I didnt know how to replace they . well low and behold Koss have a lifetime warranty and they be cover ! so all you folk who love these HP like I do , do not dispare ! I be send they out to get refurbish and im go to by another pair from Koss !