1. All our lens themselves has protective coating with UVA, UVB, UV400                                                                    
2. UVA Coating: UVA is a terrible sunshine killer. It has strong penetrating ability. It can penetrate the skin surface, penetrate deep below the skin, destroy collagen, produce wrinkles and young lines, and make skin loose and senescent.
3. UVB Coating: UVB it can make the skin sunburn and red in a short time (for 25 minutes to the average person)
4. UV400 Coating: In the market has UV380 and UV400, UV400 could avoid more harmful light.