Wool is an environmentally-friendly renewable resource that records show to have been used since the 4th century B.C. As wool is largely made up of air, it is naturally thermo-regulating and a perfect thermal insulator. Wool absorbs little odor (e.g. sweat) and is self-cleaning. After brief airing, any odors absorbed are neutralized leaving the glove smelling fresh once more. ESKA wool linings are specially processed and do not fluff (fuzz) or scratch.