"The Odin Thermal Pro Fleece Jacket uses Polartec® Thermal Pro™ fabric to stay warm without adding bulk on a ski tour or a mountaineering approach. A brushed lining keeps the inside soft, and a tail drop hem with a snug fit hood adds coverage where cold air tends to sneak in. The face fabric runs on at least 50% Recycled Claim Standard fibers, certified by IDFL. What Our Gearhead® Experts Are Saying:""I've worn this on the skin track and never had to stop and shed a layer. It breathes and stretches with every stride instead of trapping heat against my skin."""