I bought these on a whim because my current athletic shoes were hurting my foot. I LOVE these shoes! I was prepared for some blisters since they were new but I didn't get any! I am a size 10 and they fit true to size, I also have a somewhat skinny foot. I now wear these every time I work out and they are great. Note: do not walk on mushy wet grass b/c they are aerated on the bottom so your foot will get wet!