I buy these headphone at a airport electronics store about a year ago . since then they have mainly be use for listen to music when I be at my computer . nothing stressful , no drop or kick , just sit and listen . today I put they on and notice that they be not sit right on my head . I look they over and do not notice anything wrong immediately . I put up with it for a bit until it get worse . I inspect they again and the left side have a big crack just above the left folding joint which mean these be pretty much do for . honestly , I be kind of okay with it because the active noise cancel for these headphone get kind of annoy after a while . it be a much louder hiss than other active noise cancel system I have hear -lrb- my wife have a 2005 era bose active noise cancel headset and I have put on other brand in store to compare since I purchase the able planet can -rrb- . if my problem with these break do not deter you , then the annoying noise cancel probably should . it be really not that great . the sound be good , though . so that be something .