If you want to continue your sports or outdoor activities in colder weather, then the 200 Oasis undershirt from Icebreaker is for you. By using merino wool, the undershirt is very soft and feels like you are putting on a second skin. The shirt has a breathable quality so that you stay fresh and dry, but still warm. This shirt is easy to combine with a sweatshirt, fleece, body warmer, or jacket for the optimal sports outfit.