Alpha Industries Men's MA-1 Blood Chit Flight Bomber Jacket 100% Nylon Imported Dry Clean Only Features Vietnam era silk blood chit sewn on orange liner A Blood Chit or identification flag was used to rescue a downed pilot; the flag would be sewn into the pilot's flight jacket 100 percent Flight grade nylon outer shell and 100 percent polyester interlining Alpha Signature Zippered utility/pencil pocket The Classic Military Fit ajcket includes: Knitted collar, cuffs and waistband