My shoe size is 8.5 M, and these are a perfect fit. Just the right amount of room in the toe box. Although they fit, they are not super comfortable. They rub a little in places. However, I will keep them because they are good quality, very attractive, and perfect for an evening out when not a lot of walking is required. They will not go to Europe with me, but they'll go out to dinner on a cold or rainy night. I'll wear them with thin socks to minimize the rubbing. I first saw these in an upscale catalog for twice the price, so I'm happy with the deal I got on Amazon.