I never thought a pair of socks could be so beautiful! Bought for my son and now they are mine. While not an expert opinion, I have arthritis in my feet and when these socks are on my feet they feel so much better! I can wear them all day and my feet don't sweat when I take them off. Not sure why they help with leg discomfort but they do. Black socks are thicker than white ones, so they're my favorites.