I have, over the years, invested in both warm socks and in non-skid socks. The non-skid socks have been great—in summer. The warm socks have been best when I’m wearing a shoe, but sometimes felt a little restrictive if I was just kicked back watching football or reading a book. Even when I kept them on, I was a hazard to myself and others slipping around on the hardwood floors. I attribute this lack of balance to back surgeries I’ve had—my wife assured me I was that way long before. Also, I never liked wearing socks to bed.Anyhow, browsing around for some new boot socks recently, I stumbled across these. Once they arrived I put them to the test immediately. Are they warm? Absolutely! They’re a “double” sock with a soft lining. Due to this, they’re also very comfortable—and paradoxically my feet don’t get over warm. They’re comfortable enough to wear to bed. I get to sleep sooner because I don’t have to wait for my feet to warm up. And finally, they are nonskid! The little silicone-like beading on the bottoms give me great grip. I’ve already ordered additional pairs. If I didn’t have to, I might not put shoes on again until Spring.I give these a big 5 stars.