Just received the socks. As soon as I put the socks on I started to understand the amazing reviews. The socks feel fantastic. I chose XL as I wear between US 12 and 13. The size is perfect. They make my old shoes look new. I was a bit reluctant to buy a pair of socks over $15 but trust me the quality shows on first wear. I will update this if anything changes because now I will be buying another pair very soon.