The virtual setting of this bag is US Navy Clothing & Textile Reserch Unit supplied to Seals member who get on helicopter with "Coats, Ammunition Carrying, Buoyant, And Bladder, Flotation//SEAL Jacket/Coat". This is not an actual product in 1960s, but details of this bag like using original ERDL cloth, lining and TALON Zipper would think it was exist. We start to sell the Helmet Bag with Strap as well! ! !