The Patagonia R2 TechFace Jacket - Men's is a technical, full-zip fleece for versatility when pushing the limits in cool to cold weather. Hiking the mountains calls for layers to remain comfortable, as the weather changes quickly and sometimes unexpectedly. The recycled polyester and spandex blend is a stretch double weave, which warms against the skin and breathes to prevent overheating, just open and close the full zip to adjust the temperature more quickly.