I loved the look of these shoes until I took my first run.  They seemed to fit my foot just fine but in about a minute my heels began to "burn" and when I returned home 15 minutes later because both heels were hurting, I found I had rubbed raw sores on the back of my heels.  The back of this shoe has a "gathered" elastic section across the top of the heel section and that just ate the skin off my heels.  Now both shoes have blood on the elastic portion so I certainly don't feel like I can return them, but I obviously won't be wearing them again.  It seems to me that it is a design flaw to place a rough piece of gathered fabric at the heel where skin is tender.  I usually love Merrell but this design seems poor. I can't recommend them.