"The back is not flexible enough for the height. They dug into my heels with every step. Pushed off the band-aids I used the first time and ripped the skin open. When those scars heeled months later, I tried again. Covered my skin in superglue in hopes they wouldn't cut me open again. But within an hour, the same thing happened. I changed into my back-up flats within my first hour at work. Can't return because they've been worn. Very disappointed. I love these shoes so much aesthetically, but I just cannot wear them."