Worn as an underlayer at dawn and a stand-alone by noon, this supple zip-neck has articulated seaming and a luxuriously soft feel against the skin. Our most versatile merino baselayer fabric, Merino 2 keeps you dry and comfortable during active pursuits in cool to cold conditions. It's naturally breathable, regulates body temperature, has a great warmth-to-weight ratio, stretches, and naturally resists odor. Our wool comes from nonmulesed Australian merino sheep. We slow-wash it for softness and shrink-resistance without the use of environmentally harmful chlorine, and blend it with 20% polyester (100% recycled) for increased durability, resilience and moisture-management. The raglan-sleeve design allows full shoulder mobility, wide cuff bands keep sleeves in place when pulled up, and offset side seams feel smooth beneath pack straps. Machine-wash cold; machine dry at low temperatures. bluesign®-approved fabric.