Aclima LightWool Undershirt Long Mens is a long-sleeved undershirt for men made of comfortable merino wool. A simple and functional long-sleeved t-shirt is perfect for everyday use, outdoor activities and sports. Flat seams prevent chafing. The fine 17.5 micron merino wool feels soft on the skin and does not itch. Merino wool is pleasantly breathable and does not naturally collect unpleasant odors. Merino wool effectively regulates body temperature and the shirt is ideal for sweaty work as well as for standing still. Aclima LightWool is a underwear set made from the finest merino wool for both summer and winter. Öko-tex Standard 100 certified. Contains no harmful chemicals. Weight 178g (size M) Material 100% merino wool Material weight: 140 g/m² Fiber: 17.5 microns