I love them. Looks and feels good.
They're made from synthetic material that's very sweaty. The ear pads are smaller than the original Sennheiser ones, so it took me a lot of effort to attach them. Normally this is done in a few minutes, but these took me more than an hour. Moreover, the (black) part that is supposed to be tucked away and invisible is now stretched out which makes the headphone look ugly.