This is our go-to down vest for Winter. It's crazy-warm, light, and still lets you move like an athlete. UA Storm technology repels water without sacrificing breathability. 600-fill Allied duck down insulation provides extreme warmth & is ethically sourced & traceable via tag. ColdGear Infrared lining uses a soft, thermo-conductive coating to absorb & retain your body heat. Secure, zip hand pockets with soft tricot lining to keep your hands warm & internal chest pocket. Adjustable bottom hem for a secure fit. Material: Nylon 100%