"I usually wear a 6.5 but I buy flats a little larger (7 or even 7.5) so I can wear socks with them. These shoes run on the longer side, so I ended up buying them in a size 6! The first time I wore them, they were pushing on my heels a little, but now that I've used them a couple of times, they are very comfy. The rubber soles are nice for grip, but they can get squeaky down the hallways at my work on the floors where they just stripped the wax. I hate it when people can hear me walking from a mile away. Other than that, it's a great shoe and I get a lot of compliments on them."