Lightweight, low profile, compressible yet extremely warm. The Nano Puff Jacket from PatagoniaR features PrimaLoftR Gold insulation for excellent warmth to weight ratio making it the ideal insulating mid layer. Made of 100% recycled polyester and a lightweight ripstop fabric with a DWR durable water repellent finish. The Nano Puff Jacket is compressible enough to be stuffed into the internal chest pocket which doubles as a stuff sack. Features: Lightweight ripstop recycled polyester shell fabric has a DWR durable water repellent finish The most thermally efficient insulation available water repellent, compressible 60 g PrimaLoftR Gold insulation has excellent warmth to weight ratio and maintains 96% of warmth, even when wet 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 hand warmer pockets have cleanly finished zipper garages zippered internal chest pocket doubles as a stuff sack with a reinforced carabiner clip in loop Drawcord adjustable drop tail hem seals in warmth Weight: 337 g 11.9 oz Regular Fit Materials: Shell and lining: 1.4 oz 22 denier 100% recycled polyester with a DWR durable water repellent finish Insulation: 60 g PrimaLoftR Gold Insulation Eco 100% polyester 55% post consumer recycled content. Fabric is bluesignR approved.