These slippers are perfect! They fit snugly without being tight, are soft and warm and flexible. The slip on and off easily, and they keep your feet toasty without making them sweaty. They're just as warm as the type that enclose your foot, without having your feet feel all bound up in baby booties. They seem very well made and sturdy, not floppy like cloth bedroom slippers, and the bottoms are non-skid, and rugged enough to wear outdoors (shoe-like solid bottoms keep the moisture out). If you like your slippers loose, or you want to wear them with thick socks, you might be happier going up a size.