Displaying the Operational Camouflage Pattern authorized by both the U.S. Army and Air Force, the Propper FR OCP Uniform Pants are made to meet or exceed strict military standards for the ultimate protection. The term OCP began with the Army and the name ACU (Army Combat Uniform) is often used interchangeably with it. Airmen may hear it referred to as the Combat Utility Uniform in official guidance from the Air Force. These pants are built with fire-resistant fabric to offer vital protection against flames. The military-grade stitching and reinforced knees help to extend the life of the garment. With a traditional button fly and plenty of pocket storage, these uniform pants offer plenty of combat functionality while also promoting a clean, professional appearance.