UYN is a brand of the Italian firm Trerè Innovation. What began back in 1950 as a stockings factory, located to the south of Lake Garda, is now a real high-tech company with Oeko-Tex certification and its own research institute. By the way, UYN stands for Unleash Your Nature. What that means is: Base layers made exclusively with natural raw materials which guarantee you optimum performance and freedom of movement. And many professional sports stars are clearly impressed. Some of the top national ski teams wear UYM base layers, including the Italian, French, German and Austrian teams.