What Our Gearhead(R) Experts Are Saying: "I like this as a cold-weather baselayer when I'm moving but still need warmth. It dries fast, manages sweat well, and the deep zip makes it easy to vent on climbs. The slim fit layers cleanly without bunching." We reach for the Cerrig Long-Sleeve Zip Top when winter days demand warmth without sacrificing breathability. Built by Mountain Equipment as a high-performance baselayer, this top manages moisture efficiently while providing light insulation for cold, active conditions. The grid-back fabric traps warmth while allowing excess heat and moisture to escape, keeping us comfortable through sustained movement. A deep front zip offers quick ventilation when the effort ramps up, and the stand collar adds protection from wind and sun. With a slim fit that layers easily and fast-drying performance, the Cerrig is a reliable foundation for winter adventures.