These are truly made to fit true to size. I am a solid womens 10.5 M. That size is rarely made in womens shoes and sneakers, unless they are very high end. These sneakers fit me perfect. I do NOT pronate inward at all therefore they are super comfy too. Asics tend to make shoes for specific pronations, so if you have some sort of a pronate issue, be sure you look into that info. I wore 2 pairs, this style  (in other colors) being worn every day for a year. Then my feet started to hurt. I'll see how well one pair being worn every day holds up! Love them.