Brubeck Men's Sleeveless Comfort Wool SL10160 is the highest quality underwear for everyday use. It is made from the best natural material in the world – merino wool. It is exceptionally soft, feels delicate, and does not itch. Merino wool is also very thin – its fibers are only 16.5 micrometers in size – more than four times less than the average thickness of a human hair. The thinner and denser the fleece made from sheep's wool, the better its thermal insulation properties. The fibers used in Brubeck's Comfort Wool collection are the finest grade of Australian merino wool. Thanks to the high elasticity of the wool, the underwear does not wrinkle and does not compress. It fits the body perfectly, is gentle on the skin, and leaves no marks due to pressure-free cuffs and flat seams. Composition: 57% polyamide, 41% wool, 2% elastane.