ESS Profile Series replacement lenses are compatible with ESS Profile NVG, Profile TurboFan and FirePro goggles. This lens is the Hi-Def Yellow version. These 2.8mm, high-impact lenses feature ESS' advanced Clear Zone FlowCoat lens coatings to maximize scratch resistance on the outside of the lens and fog resistance on the inside. All ESS lenses offer 100% UVA/UVB protection. ESS Modular Technology allows all lenses to be quickly and inexpensively interchanged.