"These are one of the most comfy heels I've ever owned. The heels feel so stable and light, I could wear them all day. I'm a size 8.5 but my heel slips out of the shoe because I have a high arch (the length of my feet shorten in taller shoes). I thought an 8 would be too small so I just got a grip insert for the back of the shoe and that seemed to work fine."