The Norse Polartec® Performance Half Zip is made with 10.7 oz. Polartec® Power Dry® material and features Norse’s Wind Pro® with hardface material for added warmth and durability. Power Grid® material used on the side panel increase range of motion and garment flexibility. Its tighter-knit construction reduces the amount of wind chill, and its durable water repellent outer surface withstands moisture and rain – all while retaining breathability and comfort. his pullover provides 9.4 cal (CAT 2) arc flash protection, is NFPA 2112 certified, and meets the performance requirements of ASTM F1506.