text: I used to wear these shoes all the time and loved them. Unfortunately, I just bought two pairs (black & white) and the current models both share a design flaw that makes them almost unwearable. As I saw mentioned in another review, the shoes rub against the back of your heel and create blisters within hours. The shoes are exactly the right size and otherwise fit perfectly.  It's odd because I used to wear these exclusively and never had an issue until this year.  There's a very hard edge you can feel rubbing on your heel as you walk.  I regret both purchases and hope Adidas fixes this problem ASAP.