The Zephyr Merino Cool Tee from Mons Royale is made from a light and cooling blend of merino wool, Tencel and polyamide. The soft blend regulates temperature and moisture, prevents odors from developing and is pleasantly cool against the skin. The blend is also softer than a pure wool fabric. The tee shirt has a slightly wider round neckline and loosely cut short sleeves that protect against the sun's rays.