Vintage 1960's Vietnam War Era USN Flight Deck Summer Jumper Green Size XL

This vintage 1960's Vietnam war era US Navy flight deck (summer) jumper has the contract number DSA-1-2138-63-C and features a Velcro neck closure and ribbed sleeve cuffs. It is labeled a men's XL (17-17.5) measurements taken flat 27.25" chest, 19.5" shoulder to shoulder, 31.25" length, and 25.5" sleeves. It is made of a shiny material with a slightly fuzzy texture on the surface (see photos) selling item as found.