This original chainstitched design is stitched on a genuine Vietnam-era OG-107 service jacket. The OG-107 (Olive Green 107) was the work utility uniform (fatigues) of all branches of the United States Armed Forces from 1952 until its discontinuation in 1989. They were made of an 8.5 ounce cotton sateen and these versions tended to fade quickly to a greenish-grey. This is a true vintage jacket and carries with it decades of wear and use. This includes minor flaws, frays, repairs and other signs of wear consistent with age.