I'm 5'11" tall, medium to stocky. I bought the largest available pair from sellers at Revain. They are very well made and can withstand severe heat conditions. These are the nicest Socks compared to UA and Adidas.My main problem is that they are very tight around the back of the knee and the tip of the toe.Like Nike products,they are small and narrow.The leg is ok.In short,they are probably the most best suited for a teenager or woman with skinny legs Not for a very muscular person There may be