The GhostFleece™ AD Light Half-Zip is designed to trap heat and wick away moisture, regulating warmth in unpredictable environments. Weighs 120 grams. GhostFleece™ AD fabric actively wicks moisture, dries quickly and provides breathable warmth during high-intensity efforts in cold or wet conditions. - GhostFleece™ AD Engineered with patented Polartec® Alpha® Direct active insulation, this technology is designed to adapt to a wide range of conditions and activities. Its unique construction features lofted fibers directly attached to a breathable mesh core, providing consistent warmth while minimizing bulk. Polartec® Alpha® Direct is inherently hydrophobic, meaning it repels moisture, dries quickly and maintains its insulating properties even in wet conditions. This advanced insulation technology combines superior breathability with reliable warmth.