These are nice thick socks. They seem very warm - 87wool. Not itchy at all. I wear size 10.5 and ordered the L. This is basically the right size except a few issues. One sock will spin on the foot a little and need to be re adjusted. The sock is too tight on the calf. I have normal size calf so the sock isn't cut right in that area IMO. Its not painful but leaves indent in the leg. If you  like your socks squeezing your leg then you might not care. I still wear them a lot, but those small issues keep them from being perfect for me.

UPDATE***
1/10/13
I received these socks on 11/30/12 and as of 1/10/13 they are shot! I went to put them on and there is a huge silver dollar size hole in the sock. I was ready to scold my cat thinking he chewed them up, until I saw a small hole in the other sock. Now I do wear these socks every day for 8 - 10 hours, but most of that time is sitting. Im not a lumberjack, or miner, construction worker etc, Im a desk jockey. So for these Carhart heavy duty $20 socks to fail in 6 weeks is shocking to me. Maybe I bought into the Carhart mythology based on their  indestructible denim work gear. I expected atleast 6 months from these socks. Maybe my wood floor at home is to blame. I don't know. Id give 2.5 stars rating sadly.