These are truly wonderful socks - very comfortable, nice and thick, and they keep my feet warm without having them ever feel hot.

I wear a size 9 shoe, and the large size fits my feet perfectly.  A large is listed to feet sizes 9 through 11.5, so my feet are on the low end of that.

I read at least one review that mentioned the socks shrinking after washing, but I didn't experience that.  I followed the directions and washed them in warm water and then dried them on low heat.  I didn't dry them completely because my understanding is that wool can shrink if you over dry it.  After that, they seem to be exactly the same size as they were originally.

So far, these have been high quality socks and that are very comfortable, and I love the coloring.