The best warmth for weight jacket Patagonia has ever built, the Patagonia Men's Micro Puff Jacket delivers ultralightweight, water-resistant, down-like warmth with PlumaFill synthetic insulation—a revolutionary featherlight down alternative. Ultralight nylon fabric has a water-resistant endurance coating for improved weather protection PlumaFill insulation provides excellent warmth for its weight & stays warm when wet Innovative quilting construction maximizing the loft of PlumaFill strands with minimal stitching Center-front zipper has wicking interior storm flap & 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 adjustable hem seal in warmth Fair Trade Certified sewn means the people who made it earned a premium for their labor Manufacturer lifetime warranty against defects in materials and workmanship