Extremely comfortable and moisture wicking.
If you are used to the typical cotton or thin ASIC's running socks you will be in for a surprise. I ran cross country for over a year using typical cotton socks and then for another 4 years with the nice $15.00 Asic's thin runners socks. The primary problem I had was moisture build up and comfort. Then the asids took take of the moisture part and were a bit more comfy. The only problem I have from the asics was the odor control. Then I finally gave smart wool a try. As soon I I slipped them on I felt a tremendous difference and they took off from there. Excellent breathability, excellent warmth or cooling abilities, and no odor even when I whore them for 5 consecutive days running.