Well, I just purchased a pair of these as a gift for a 72-year-old friend of mind who's diabetic and suffers from feet that are always cold. He LOVES THESE SLIPPERS!! Since putting them on for the first time last night, his own words are that his feet are "toasty warm!" And although he normally wears a men's size 11, I got him a size 12 to give him adequate toe room. He says they're a perfect fit. A happy camper indeed!!