Empire Vents Thermal Goggle Lens Silver MirrorEmpire Vents Lenses come in different colors so you can customize your mask to meet your individual needs. All lenses in the Avatar, Cylus, Helix, and Empire E Vents range can be swapped easily between models and masks. Get the lens to suit every condition from amber and clear lenses for low light conditions to mirror and ninja lenses for bright sun or under those stadium lights. The Empire Vents Thermal Lenses feature a dual pane lens for Anti Fog.