I admit I was a little skeptical about purchasing these shoes. They look like regular sneakers, but with the bottom of the shoes not flat, they make my legs work a little harder to maintain my balance and posture. They didn't take long to get used to, and I wear them all the time now! The first time I wore them for my entire shift at the hospital, I felt a difference by the end of the day. And the next day I was sore all over!! I'm so glad I bought these shoes! I wish they had more color choices in this style, but for now, these are my favorite walking/working out shoes!