The Mons Royale YOTEI TECH LS combines the functionality of merino wool with a great style. Can be worn separately or as a base layer. Made from lightweight merino wool (190g) that is warm, breathable and durable in a looser mons standard fit with sleeves with thumb holes. Merino is a soft sheep's wool that wicks sweat away while keeping the body temperature at an optimal level without any odours.