Made by GIBSON & BARNES in California. The Sentinel Jackets has all the features of CWU jackets currently worn by U.S. military pilots. Featuring a pleated action back that gives you unlimited horizontal and vertical reach. The Sentinel includes angled front pockets and a zippered sleeve pocket with a pencil pocket. Jackets made from NOMEX® polyester/cotton twill fabric. Nomex is a flame-resistant meta-aramid material developed in the early 1960s by DuPont.