They just don't make them like they used to! Twenty minutes into class and the back heel came off completely. These are comfier than they used to be but I'm really questioning the quality. I re-screwed on the heel tap in hopes that I can make it through the next class without it falling off [UPDATE- I'm constantly re-tightening the heel mid class]. I did not loosen the taps at all prior to the first class. Directions state that you should wear these shoes without tuning or loosening the taps for at least 1 class. My teacher always recommended about a month of classes before tuning them