Recycled Nylon ripstop 50 CFMThermal regulating Octa-liningGusseted underarm and articulated elbow for easy movingFixed hood with elastic binding for easy coverageZippered hand pockets keep things secureAdjustable drawcord hem keeps cold air outThumbholes for added hand coverage and warmthEnvironmentally conscious PFC-Free DWR for premium water repellency to keep you dry100% Recycled Nylon RipstopOcta yarn 100% Polyester Tricot The Alt HB Hoody is made for extreme breathability with a recycled fabric and unique octa-yarn lining that moves heat away from the body, it keeps your core at just-the-right temp when you’re getting after it. This is one of the best temp regulating insulated jackets out there. Marmot Men's Alt HB Hoody