My feet usually have two temperatures: too cold and too hot. I've tried all kinds of slippers. Enclosed styles would make my feet perspire. If they were open enough (like flip flop/thong styles) to prevent perspiration, they wouldn't keep my feet warm. These are the perfect solution. No more kicking off too-warm slippers then realizing my feet are freezing again. These slippers cover enough to keep me warm but have enough ventilation to prevent overheated feet. They are soft, comfortable, adjustable (really helpful when my instep swelled from an injured ankle) and well-padded. They wash and dry beautifully on normal machine settings. I'll be buying these again!

P.S.: My slippers did not have any odor whatsoever, unlike the experience of a previous reviewer. I am sensitive to odors and would have noticed even a moderate chemical smell.