I have been using them on my indoor trainer riding approximately 20 miles per day and find that they are wicking well, when I take off my bike shoes they feel almost dry inside as to when I was just wearing white cotton socks and they were real damp. I looked at suggested sizing and purchased them according to what was suggested. There is a lot of stretch in the sock so I don't have to pull them on  like dress socks or cotton socks which allows for more cushioning for the foot; I would definitely recommend these to any cyclist and would purchase them again.