While the slippers are nice and light and fluffy, the elastic on the right foot is uncomfortably tight, totally ruining the experience. I am a small thin person, and it still feels like it is cutting off my circulation! I have bought Acorn slippers in the past, but because they were scuffs, I never had to deal with the elastic issue. Also, while size small is too small, the medium is really too large. About an inch of the back of the slipper is sticking out from my heel.