What is Dachstein, is it just the name of a model from the Mammut company that are available at campmor?

I've heard that the warmest knitted mitts are those made from buffalo wool but are not easy to find and that duffel wool is warmer than knitted mitts. But these Dachstein mitts are boiled wool and pre shrunk, which makes them more dense and resembling wool felt or duffle but are still knitted mitts. Is this correct?