Engineered to provide versatile thermal protection in a broad range of climates, the Insulator Jacket is built from 62% nylon , 38% polyester fabric for an ideal blend of comfort, warmth, and weather resistance. Features include a DWR (durable water resistant) treated exterior that protects from light rain, polyester spandex stretch side panels that maximize breathability and ensure a snug fit, and Tactical unique rapidraw pockets for quick and unhindered access to your firearm. The 100 gm primaloft silver lining provides an outstanding warmth-to-weight ratio, and low-profile chest pockets provide plenty of space for your accessories. Material: Polyester, Nylon.