EUC. Mens size XL. Warm, windproof, water-resistant—the Patagonia men’s Nano Puff® vest uses incredibly lightweight and highly compressible 60-g PrimaLoft® Gold Insulation Eco (100% polyester that’s at least 55% postconsumer recycled) wrapped in a 100% recycled polyester shell and lining. Features 100% Recycled Shell Fabric Lightweight 100% recycled polyester ripstop shell has a DWR (durable water repellent) finish 60-g PrimaLoft® Gold Insulation Eco, with 55-100% postconsumer recycled polyester, provides excellent warmth for its weight and stays warm when wet; styles made for 2020 and beyond are produced with P.U.R.E.™ (Produced Using Reduced Emissions) technology, which reduces carbon emissions as compared to conventional production methods Brick quilting pattern with horizontal quilt lines on side panels stabilizes insulation and uses durable thread for abrasion resistance Center-front zipper has wicking interior storm flap and zipper garage at chin for next-to-skin comfort Two zippered handwarmer pockets have cleanly finished zipper garages; internal zippered chest pocket doubles as a stuffsack with a reinforced carabiner