A Single Pair for Everywhere! The goggle-in-a-sunglass concept provides all the features of Wiley X’s great XL-1 model (see details at keyword PO291) including the incredible wind, sun, glare, and debris protectionbut this single set of lenses a LA Light Adjusting Lenses use a technology new to shooting lenses that adjusts the light transmission levels according to the amount of sun exposure. This maximizes target definition based on light conditions, giving you perfect optical clarity