I'm one of those people who's hands and ears always get cold. I've tried lots of different gloves but my fingers always seem to be the first things that get uncomfortable when out in cold weather. After seeing the reviews for these mittens, I decided to try them out before trying a costly down mitten. Wow! I finally have warm fingers while out walking in the cold. These mittens do run small. I normally wear a medium glove, but bought the large Carhartt mitten. It fits perfectly. They also are very waterproof, an added bonus.