Bought these when weather was dropping to subzero temperatures at my school, and was not disappointed. As someone who has snowboarded in places from the Rockies, to Vermont, to Canada, to the Alps in Austria, I've never seen socks this thick (almost an inch of wool), nor as warm. Would suggest sock liners to wick any sweat from the feat, as that can actually make your feet cold (something you don't want). Shipped quickly too, very well done.