The Stirrup Insulated Jacket is built with a 100 gram poly-fill sandwiched between a lightweight crinkled ripstop exterior and a high-air-permeable lining, the material package mirrors that of leading winters-port mid-layer jackets. The silhouette is slightly cropped in the body and has a voluminous chest and arm shape to create a top-heavy and functional fit. Two zippered hand pockets, elasticated cuffs and dual adjustments at the waist line.