To fit chest (recommended): S 34"-38", M 36"-40", L 38"-42, XL 41"-45", XXL 44"-48", 3XL 46"-50", 4XL 47"-51", 5XL 49"-53". The CWU-45P flight jacket (also known as MA-2 flight jacket) was the original flight jacket designed and issued in 1973 by the United States Air Force. This warm and comfortable CWU-45P jacket is made of durable 210D Nylon Twill. It goes with a removable faux fur collar and a strong full length front zip, and features two front cargo pockets, two inner chest pockets, all with hook-and-loop fastening, one zip pocket and arm office on the left sleeve and a detachable hook-and-loop plate on chest. The jacket is fully lined with quilted lining and polyester batting, and the cargo pockets are fully lined with double needle stitching.