The resultant mat of me was broken. The Babushölzchen are connected to a nylon thread. This thread had snapped at me and as far as I have refrained him to me it would be only a matter of time until it elsewhere would be torn. Qualitatively one can still say that the mat not really lying flat because the matches are of different heights and of course those who are covered with the anti-slip pads, apply a little more. Totaly it seems a bit out of shape, which could, of course, located in my case also to the broken thread. Returns / Exchanges probably without problems, where I got my money back and was asked the mat disposed of ...