UV-resistant sunglasses generally have the following signs:
"UV400": the average transmittance of ultraviolet light having a wavelength below 400 nm through the lens is not more than 2%
"UV", "UV protection": indicates that the average transmittance of ultraviolet light having a wavelength below 380 nm is not more than 2%.
"100% UV absorption": It means that the lens can filter 100% of all wavelengths of ultraviolet light with an average transmittance of no more than 0.5%.
All FLYMOON sunglasses come with “UV400” standard lens!