People claim the mittens from Polar Mitts are the warmest mittens they have ever worn. They are made from a thick Berber or plush outer fabric and a 300 weight Polartec lining with interior elastic at the wrist for a comfortable fit.
Measurements below are approximate. If you're not sure of your size, go up a size as mittens don't need to be a tight fit. The approximate measurements below measures from the finger tip to the wrist.
Color: Black with Blue, Yellow, and Red pattern
Small = 7.5", Medium = 8", Large = 8.5"