These socks are great. They're not quite as thin as I would have liked but they work just fine for the slightly colder days. They're a little thicker than the comparable pairs from Darn Tough and EURO socks. The only other thing is that the front-padding is not as anatomically fit as some other brands so it tends to feel just a tad bulky in my boot. Really not much of an issue though. I wear 29.0 ski boot and a 12.0 street shoe and the XL's fit me fine.