ALPHA INDUSTRIES MA-1 Jacket in Purple. - size S (also in ) ALPHA INDUSTRIES MA-1 Jacket in Purple. - size S (also in ) Nylon blend. Dry clean only. Front zipper closure. Side and internal welt pockets with snap button closures. Zippered arm pocket with ring pull. Banded edges. ALPR-WO10. WJM44500C1. Since setting up shop in 1959, Alpha Industries has supplied men with the best in military-inspired fashion. Formerly manufacturers of flight and terrain jackets for the Department of Defense, these Alpha Industries takes their technologies and soldier style to better suit the everyday guy.