Patagonia Men's Micro Puff® Hoody Jacket Size XL NWOT The Micro Puff® Hoody combines ultralight Pertex® Quantum shell fabric with PlumaFill insulation, and the result is the best warmth-to-weight ratio and the highest compressibility of any synthetic jackets. It is your go-to insulation piece for mixed and cold conditions. Technical Specs: Best Use: Multisport Fabric: 10-denier nylon ripstop Pertex Quantum Insulated: Yes Insulation: 65g PlumaFill polyester fibers Back Length: 29" Sleeve Length: 29" Pit to Pit: 25" Weight: 9.3 ounces