Everyone needs an Under Armour Men's UA Storm ColdGear Infrared Turing Vest. It's insanely light, incredibly warm, and water rolls right off. It packs into it's own pocket so you can clip it to a pack bring it anywhere. Shell is 20D 100% nylon. Lining is 100% polyester. UA Storm1 water resistance thanks to the DWR finish that repels water without sacrificing breathability. 100g PrimaLoft Silver downsynthetic hybrid insulation 40% PrimaLoft, 60% water resistant downcombines the best of both worlds: natural down high performance synthetic. ColdGear Infrared technology uses a soft, thermo conductive inner coating to absorb and retain your own body heat so you stay warmer, longer, with no extra weight or bulk. Secure chest audio pocket with interior headphone escape. Zippered hand pockets. Packs into left pocket. Import.