Lightweight, low profile, compressible yet extremely warm. The Nano Puff Hoody 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 Hoody is compressible enough to be stuffed into the internal chest pocket which doubles as a stuff sack. Features: Regular Fit Lightweight ripstop recycled polyester shell fabric has a DWR durable water repellent finish Lightweight 60 g PrimaLoftR Gold insulation provides excellent warmth and compressibility 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 clean finished zipper garages zippered internal chest pocket doubles as a stuff sack with a reinforced carabiner clip in loop Under the helmet hood construction is light and simple Drawcord adjustable drop tail hem seals in warmth Avg. Weight: 329 g 11.6 oz Fabric: shell and lining: 1.4 oz 22 denier 100% recycled polyester, with a DWR durable water repellent finish insulation: 60 g PrimaLoftR Gold 100% polyester Technology: PrimaLoftR Gold Insulation: uses thermally efficient 100% polyester that s hydrophobic, highly compressible and maintains 96% of warmth, even when wet.