I love these silly socks, I’ve bought them 3 times already over the course of 2 years but one set I ordered for mom’s house for when I’m visiting over holidays. They’re plush and cozy but still lightweight and breathable. It’s quite surprising what a difference they make when my feet are freezing but they’re not so thick that I have to end up peel them off cause I’m getting too warm. I find myself reaching for these more than my house slippers, though they don’t have any traction on the bottom so be careful if you have especially slippery floors. They do and will wear out over time; I started to develop holes in the ball of my foot area and the thin elastic at the ankle started to wear so I knew I needed a replacement set and I tossed the old ones. But after 2 years of regular wear I think that’s pretty good. I also wear them year round, not just when it’s chilly. They have a looser but cozy fit on me which I like - super comfortable and not too tight but I wear a size 6 1/2 - 7 so my tootsies are on the smaller size. I’ve tried others that are similar that I haven’t liked as much so I’ll continue to buy them as long as they’re available.