I would not recommend. I typically wear a size 8 in women?s sneakers. These slippers are a warm and welcomed change for my cold feet! I tested it on the handlebars and it would also work there. No exaggeration. Disclaimer: this phone has a super sleek style backing and does NOT come with the textured look you see in my pics! People cant even tell Im driving so thats impressive. It seems that many shoe/slipper companies have done away with half sizes, which is unfortunate for those of us who wear a half size. this waist trainer is EVERYTHING ! Battery life is great Ive gone almost a full week at the gym before needing to charge these.