I purchashed these for 3 reasons; 1-warmth 2-over the calf length 3-wicking. Well let's see; 1-these weren't any warmer than regular socks(and I am in San Diego, not that cold.) 2- elastic is so weak, the socks don't stay up. 3-my feet didn't get warm enough to sweat, so I can't say whether they wick or not. I wore one pair, I guess I'll try to return the other. Edit Dec 2016; turns out that my problem wasn't the socks, but I had diabetes related nerve issues. After medication, I have given the socks another try (good thing I kept them) and I am raising the rating to 4 stars. They are warm and do wick well.