Versatile, comfortable long-sleeve t-shirt in fine merino wool for winter tours Ortovox's 185 ROCK'N'WOOL LONG SLEEVE for women is extra soft and keeps you warm when the weather gets cold and the going gets tough thanks to its fine merino wool. Freeriding starts with the first layer of clothing, as this layer is crucial for functionality. The longsleeve is made of 100% fine merino wool with a fineness of 19 microns. It feels comfortable on the skin and ensures an optimum climate thanks to its temperature and moisture-regulating qualities.