Innovative construction matched with revolutionary materials make the Thermal Airshed Jacket a critical layer for all your high-exertion activities in colder weather. The hybridized body contains 100% recycled polyester PlumaFill insulation in front panels and arms for warmth, with non-insulated underarms and back panel that allow heat dumping during high-output. The main body fabric is treated with a new PFC-free DWR (durable water repellent that does not contain perfluorinated chemistry).