Airfly Sunglasses Replacement Spare Photochromic Free Size Lenses, Lenses, Gray,

UV light changes color from clear to gray Blocks over 99% of UV rays (UV transmittance below 0.1%) Visible light transmittance 15~75% Can be attached to AF-305 & AF-305CYMT frames (cannot be attached to AF-301 series or AF-302)