I will edit this review after I receive the size 11. it has not moved yet. Fit is expected. Another feature that I think should be advertised more is the fact that they use a usb-c port for charging. Needless to say I find them to be one of the most comfortable shoes I have owned and they ware like iron. I do notice Im a bit warmer but thats expected. even so I would buy this again in the future, assuming it lasts more than a year. I wear size 12s and have a "high instep," so many times I cannot find my size. If you do you will melt the coating on the LEDs and damage the diodes that run the light sting. The only reason why I didnt vote it 5 stars is because Im unimpressed with the quality of color print.