So, heres the deal. These were made to fit my husbands feet. I bought in a small and fits very comfy it’s slightly baggy but I’d even shoot for a medium for it being a bit more baggy and loose fitting But its not so big of a deal to ding it a star. Bonne sourie. The battery certainly lasted at least 8-9 hours over the three day period I had this boombox used for hours at a time. The measurements gave impression would fit, because I wear a 13 M but these are to tight of a fit, and cause irritation when i wear them, so not happy Ultimately I went with the Newport. The sparkle superloafer looks less like glitter/sparkle and more like VERY cheap wrinkled/crushed material. If youre looking for a decent water shoe I definitely recommend the Jawpaw.