I am normally a size 5.5, but I have wide feet so I can wear size 6 too. I ordered these in a size 6 in grey/black because that's all they had. I could most likely go down a size they are wider than they appear. I have yet to wear them longer than around the house cleaning, but my
guess is I can wear them all night and they will be fine. Oh, yeah...I also never wear heels, I can't walk in them. These are easier than regular heels especially since they hug your foot. It took some getting used to but they are easier to walk in then some heels I have, which are shorter. One more thing, if you have a high instep or arch these will work for you. I was worried about the strap but they are fine, no cutting my foot.