When I was reading the reviews I was a bit nervous on how thick these socks would be since I live in Arizona. They are for a 5k race and I did not want my sock to be too thick and make my shoe tight. Well, my hiking socks are thicker than these...so no worries. I will say though, that if you have large calves or bigger legs...these will feel like a compression sock vs a tube sock (for all of you who are old enough to remember the knee high tube socks) Love the socks! They will go great with my Bazinga shirt for the 5k.