If you stop to catch your breath, miles out into the backcountry, and quickly begin to freeze, you might be in trouble—unless you're wearing the Microchill™ Zip T. This heritage style is an easy, lightweight layer made of versatile fleece that pulls moisture off your skin when under a ski shell or midlayer. Count on it as the baseline for your winter outfitting or wear it as effortlessly on its own, no matter how you use it, it's simplistic capabilities will raise your standards for step-one layering.