When you need temperature regulation and comfort over the long haul, the Icebreaker Women's BodyFit 200 Oasis 1/2-Zip Top is there for you. Whether layered under your ski jacket or worn under your backpack on a multi-day trek in the mountains, this versatile baselayer keeps you comfortable. Merino wool is breathable, regulates temperature and controls odor thanks to its natural anti-odor properties. So you can put this top through multiple days of sweaty pursuits and still be able to snuggle your tent companion. The zip collar provides extra warmth when zipped up or extra venting when zipped down for an added level of temperature control. Offset shoulder seams allow room for backpack straps to sit flat on fabric to prevent seam rubbing and side seams are moved toward the back to prevent chafing. A drop-tail hem provides extra rear coverage.