The North Face Summit L1 Top Women's

High above the treeline, where the mountains meet the sky, failure is more likely than success. But when you're properly equipped like wearing The North Face Women's Summit L1 Top what seemed impossible becomes possible. Designed with input from elite athletes, the Summit Series works to keep you warm, dry, and safe in extreme environments, and the Summit L1 Top is the foundation of it all. The one piece you won't take off until the mission is complete, this baselayer is made from Thermolite fabric, which features hollow core fibers engineered to trap body heat to keep you toasty warm, and it's also designed to wick away moisture before it can become a serious problem. The engineered knit places more warmth in critical areas to keep you comfortable as you push for your destination. A half zip design provides ventilation for easy temperature control, while the morrow stitch construction eliminates bulk and improves comfort.