These are the most comfortable things ever to touch my feet and ankles. I have rheumatoid arthritis and when my ankles ached recently, I reached down to massage them only to find that they were ice cold. After I warmed them, they no longer ached. I immediately ordered these slippers. They arrived the next day, and my feet & ankles have been pain free ever since. I would recommend purchasing the next size up (I usually wear size 8 but ordered size 9/10 and they fit perfectly) because of others' recommendations. Otherwise, be prepared for a great experience! I might even wear them while I shop at Walmart in my pajamas; they look that cool!