We count on the Morrison Gilltek Jacket to keep us comfortably warm, whether we're enjoying a bLolewer powder day on the sLolepes or out for a night on the town. The synthetic insulation is breathable and quick to dry--a better match than down insulation for snow, sweat, and damp weather. The jacket also provides plenty of ventilation and breathability with ventilating "gills" between the baffles and stretch-mesh side panels that let heat and moisture vapor escape to prevent us from overheating when we're skiing, snowboarding, or backpacking.