I purchased these socks for my husband as he is an avid runner. I thought he should have the best. I was a little disconcerted by the relative thinness of the socks initially but was proven wrong once he wore them. It seems socks do not need to be thick to be effective. The double layer constrution has some type of soothing effect that he must be happy with since I keep seeing them showing up in the wash! Obviously he likes them. I notice he started out just wearing them occasionaly but now he wears them EVERY time he goes running. I am glad I bought more than one pair!