Mons Royale Men's Yotei Tech LS - Merino wool The technical performance of merino matched with uncompromised style, the Yotei can be worn on its own or over a baselayer. Made using our 190 Lightweight Merino, which is warm, breathable, odour resistant. Materials 100% merino wool Features 190 Lightweight 100% Merino regulates temperature and resists odour Mons standard fit Thumb loops. What's sustainable? ZQ Certificate   Non-mulesing Merino wool ZQ is a hallmark that certifies a farmer is meeting the highest standards in the areas of animal welfare, environmental care, and social sustainability - e.g. traceable, No mulesing, Hand selected Environmentally friendly dyes and water processing & fair manufacturing process