As others have already mentioned, these run small. But just not a little small, small small. I normally wear a size 10.5 shoe and bought these as size 11, but I can still barely get my foot in them without socks; with socks, I have to hammer them onto my feet. I bought them on a whim for less than $20 and just to wear occasionally when I go outside the house for something casual, so not a huge deal, but if they had only made the strap that goes over your foot with a Velcro fastener to adjust it they'd be fantastic. I find them generally comfortable as far as support and bottom of my foot goes, it's just that the strap over the foot is way too tight. I'm hoping with usage it will loosen up some, time will tell, but if I had it to do over I'd go with a size 12. Again, for what I paid, I don't think it's worth my hassle to bother returning them for a new size.