The Patagonia Men's Micro Puff Jacket is the best warmth for weight jacket Patagonia has ever built, delivering ultralightweight, water-resistant, down-like warmth with PlumaFill synthetic insulation—a revolutionary featherlight down alternative. It’s like down, only better—Patagonia's Micro Puff® Jacket uses a revolutionary, feather-soft synthetic insulation with an unprecedented warmth-to-weight ratio. The groundbreaking PlumaFill insulation (65-g 100% polyester) is phenomenally light and compressible, offering down-level warmth that still traps your heat when it’s wet. A nylon ripstop Pertex Quantum® shell, with a DWR (durable water repellent) finish, blocks wind and snow. The garment’s design maximizes performance and minimizes useless fluff. Features: zippered handwarmer pockets (the left pocket doubles as a stuffsack with a reinforced carabiner clip-in loop), a pair of sleek internal drop-in pockets (made without excess, using the backside of the handwarmer pocket bags), and elasticized cuffs and hem. Features and Specifications Ultralight nylon ripstop Pertex Quantum® shell is water-resistant, windproof and treated with a DWR (durable water repellent) finish Revolutionary PlumaFill insulation replicates the structure of down in a continuous synthetic insulation material, offering the warmth, packability and feel of down but with the warm-when-wet performance of synthetic insulation Innovative quilting construction complements the insulation by stabilizing and maximizing the loft of the PlumaFill strands with minimal stitching Center-front zipper has storm flap and zipper garage at chin for next-to-skin comfort Two welted zippered handwarmer pockets and two internal drop-in pockets; left pocket doubles as a stuffsack with a reinforced carabiner clip-in loop Elasticized cuffs and hem seal in warmth 235 g (8.3 oz) Shell and lining: 0.7-oz 10-denier 100% nylon ripstop Pertex Quantum® with a DWR (durable water repellent) finish. Insulation: 65-g PlumaFill 100% polyester Patagonia Men's Micro Puff Jacket - ultralight windproof insulated jacket