toasty and silky, too. Well worth the $
This is my second pair of icebreakers but the legless ones arrived too late for my last big trip. While i can't yet evaluate the shorter version, i can tell you that i LOVE wearing the other pair i have. They keep me warmer than my synthetic base layer, don't smell, are very comfortable espec around the waist. Basically i don't feel like I'm wearing an extra layer. Some static buildup but much less than synthetic. They wash well and hang dry about as fast, too.
Summary: super warm, super plush. spend the money!