Patagonia Men's Nano Puff Bivy Pullover Warm, windproof, water-resistant--the Nano Puff(R) Bivy Pullover uses warm, incredibly lightweight and highly compressible 60-g PrimaLoft(R) Gold Insulation Eco with 55% postconsumer recycled content, wrapped in a 100% recycled polyester shell and lining. Features: Lightweight 100% recycled polyester ripstop shell and lining fabric has a DWR (durable water repellent) finish 60-g PrimaLoft(R) Gold Insulation Eco, with 55% postconsumer recycled content, is water-repellent, highly compressible and maintains 98% of warmth, even when wet Brick quilting pattern with horizontal quilt lines on side panels stabilizes insulation and uses durable thread for abrasion resistance Venting center-front zipper has wicking interior storm flap and zipper garage at chin for next-to-skin comfort Kangaroo-style handwarmer pocket; zippered drop-in torso pocket doubles as a stuffsack with a reinforced carabiner clip-in loop Under-the-helmet hood with elastic binding is warm and simple Elastic-bound cuffs and drawcord-adjustable hem seal in warmth 354 g (12.5 oz)