The SuperSonic Smock combines PointZero windproof shell with the insulation of PRIMALOFT® ACTIVE Insulating Fabric Technology 75g lining. PRIMALOFT ACTIVE Insulating Fabric Technology synthetic plume is woven directly onto a single layer mesh fabric. Made entirely from PRIMALOFT ACTIVE Evolve the fabric offers the same warmth as other synthetic insulation products but with half the weight and the breathability better than a long sleeve tee. The PointZero windproof has an incredibly low weight and pack size. The SuperSonic is an ultra light, insulating windproof jacket that has a place on any adventure, weighing only 185g.