JT Spectra & Flex Mask Thermal Lens - Smoke
This lens is compatible with the JT Spectra and all Flex masks. This thermal lens prevents the mask from fogging.
Cheapest price on the web, product is the real deal. Very nice shade that can be used in most conditions. Make sure you wipe the lens off before putting away because the paint can be corrosive and affect the layers on the lens. Other than that can’t complain