Ullfrotté
The Swedish word for wool is ull and so it is obvious that this material consists mostly of wool. The material is known for its good properties, but it is not particularly abrasion-resistant. Polyester and polyamide are therefore also added.
Ullfrotté is now somewhat out of fashion, but it is still often worn under sports underwear. In Sweden, ullfrotté is even part of the work clothes of hunters and foresters.