Gently used, a hole in the back neck ribbing and back waist ribbing (see photos for more details). Nylon Shell and Lining. Wool Pile Interlining. Wool Ribbing. Inner pockets on both sides. A Reproduction of the Type MA-1 flight jacket, introduced in the 1950s and becoming the flight jacket of the U.S. Air Force. This classic bomber is constructed from a Custom produced fabric that authentically replicates the true color and characteristics of the highly durable nylon material from that era. Functional details are authentically reproduced down to the smallest detail without any compromises. The choice of materials was no less meticulous. The quality of the fabrics, the zippers, the buttons and every other element without exception were specially developed by The Real McCoy's to ensure the greatest possible authenticity. As this is an authentic repro, this jacket also runs shorter than modern jackets.