Bags covered by this specification are intended for use in specialized military methods of preservation where VCI treated sealable bags are required. Barrier materials used in the construction of these bags are military unique and the bags provide the necessary protection to their contents from exposure to the extremes of the navy/naval aviation environment. There are no commercial equivalent materials that can provide this protection. Bags meeting the requirements of this specification are one of the building blocks approved under MIL-STD-2073-1 to provide the unique protective properties required to protect military hardware from exposure to the severe military operating environment.