Love, love, love these socks.
"Love, love, love these socks. The cushion is soft without taking up too much space in my shoe. I was a little worried that the tab in the back would irritate my Achilles, but it didn’t. My feet felt like they were embraced in a warm sock hug. Some of my other socks will allow my feet to slide forward in my shoe when going downhills, these sock keep my feet in place. I wore these through multiple training runs and across 2 segments of a long relay race. I would definitely buy these again. Darn Tough does it again!"
EU