I purchased twice but only because I didn't know nikes run small. I am a true sz. 8 so I purchased an 8. I couldn't get them on, returned them, then re-ordered an 8 1/2.  Not sure if it's this style or if they all run small. I had to purchase a shoe horn to get them on. I got lots of compliments and once on, they are comfortable, just not easy to get them on.