These are the most uncomfortable socks I’ve ever owned. I bought three pair for $10 a piece as gifts and then when they went on clearance, I bought myself a pair for five dollars.. I am so embarrassed to have given these away. If I could go back, I wouldn’t have spent $.50 on these. They have a liner so it’s kind of like two socks sewn together, but they’re sewn crooked. Each seam itself is uncomfortable but having two seams in one sock going in two different directions that you can’t get to line up is its own kind of punishment. I can’t wear these alone, could not imagine putting a shoe on over top of it. It’s just a bad design. I don’t know who approved this and let it out of the factory. Not sure if they’re warm because I can’t stand to keep them long enough.