Not a huge fan of the long tabs on the side so may end up just cutting them off. I absolutely love these heels! But hey. I returned ans purchased a Large and it it very snug, the way a waist trainer should be. My right foot doesnt have the problem so, I didnt have to adjust the width. Ease of use is fantastic! FYI: The package label referred to the sizes as US m7w9; EUR 39-40; UK m6w7. $100. Phone calls sound great. Also I can breathe while wearing it!