Just feels downright good — fits like a second skin and ensures an extra serving of warmth. We used 80 % of the finest wool from Merino sheep for this long sleeve shirt. Wool is comfortably warm, absorbs moisture and regulates your body’s microclimate with natural methods. It is a sustainable, renewable raw resource that is very soft against the skin. To make this functional base layer dry even faster and maintain its shape longer, we integrated polyester fibers (20 %). The VAUDE Green Shape label stands for environmentally friendly, functional products made from sustainable materials.