Transition Lenses (Photochromic Lenses) has installed in this sunglasses. It can adjust and adapt in changing light (UV) to help protect from the sun's rays.<br />The sunglasses with Photochromic lenses，adjusting according to the amount of light. Light brighter， lenses darker， lenses clear as the day fades to night. Better protecting your eyes and make your sight clearer.<br />UV400 filter on the lenses will protect your eyes from harmful radiation.<br />They can be used in all weather conditions as the photochromic lenses automatically adjust tinting to ambient light conditions.<br />UV400 Lens technology， absorbing 100% of harmful UVA and UVB rays.<br />