Size can be hit and miss; in the case of these slippers, just right for me. I wear size 7 or 7 1/2, so ordered 7/8. Perfect. I can even wear them with thick socks when the floors get cold. It’ll take a bit of practice to learn to walk in these (and not shuffle), as the bottoms are pretty stiff. Maybe they’ll soften. But all in all, I’m happy with the slippers and hope they’ll last a long time. May order another pair.See full review