What happened to NB?? Used to be my goto for tennis shoes. After last few purchases I'm done for now. This shoe makes your feet really hot and sweat, and after walking on it for half a day my hamstrings were sore. Perhaps it is the memory foam insert that causes them to be too hot. I would not recommend these and don't understand the good reviews. I've wasted money on my last few NB shoes purchases. Too late to return them. Fool me twice shame on me! I used to love NB. Sad that the quality has gone done. Why did they mess up such a great product? I'm left wondering what happened.