This is the ESS Profile NVG Goggle in Desert Tan with the Stealth Sleeve. The ESS Stealth Sleeve is designed to cover the goggle when it is stowed on a headgear, preventing reflection or glint off the lens and helping to keep the goggles clean and the lenses scratch-free. Numbering information is as follows.
Desert Tan with Stealth Sleeve Stock No: EP01DT1MSB
NSN: 4240-01-504-5727