I bought these for my wife, even after reading the multiple negative reviews about the heel pain this shoe causes. I thought maybe there were just a few people who disliked the shoes. After running a mile in the shoes, my wife says that she could no longer stand the pain it caused and had to switch back to her own shoes. I own a pair of the original Kinvara, so now I'm not sure which shoe I will buy to replace it, but it will most likely not be the Kinvara 3.