I found these in a local store in December, and planned on picking them up in January. But they were sold out - as was just about every other retailer online. Except backcountry - they had a few left. I ordered the large, but should have heeded a few of the reviews I read that stated they ran a little small. The exchange process with backcountry was incredibly easy, by the way.
These are the warmest mitts I've ever owned. I bought them for hiking in some extreme situations, and they performed perfectly. So well, that I tried them riding my motorcycle in sub-20F (I know, not much crash protection, but at that temperature it's the least of my worries), and again, perfect, even at 70+ MPH, where my winter motorcycle gloves can never keep my fingers warm. I can only hope they hold up to abuse and last, cause I love 'em.