ALPHA INDUSTRIES L-2b Loose Flight Jacket in Sage. - size M (also in S) ALPHA INDUSTRIES L-2b Loose Flight Jacket in Sage. - size M (also in S) Self: 100% polyCuffs: 100% nylonCollar: 99% poly 1% spandex. Dry clean only. Reversible and water resistant. Front zipper closure. 2 exterior flap pockets, 2 interior welt pockets and utility sleeve pocket with logo pull tab. Sleeve shirring. Knit collar, cuffs and waistband. Imported. ALPR-WO48. MJL49004C1. 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.