Pyramex Ztek Safety Glasses , Wrap Around Type , Gray Lens Color , Polycarbonate Lens Material , Scratch Resistant Lens Coating , Gray Frame Color , Polycarbonate Frame Material , 99% UV , Non Adjustable Temple Adjustment , ANSI Z87.1 - 2010, CSA Z94.3 Standards , 10 Curved Base , 2.5 MM Lens Thickness , 21 Gram Weight