Pyramex Avante Safety Glasses , Vented Type , Gray Lens Color , Polycarbonate Lens Material , Scratch Resistant Lens Coating , Silver Frame Color , Polycarbonate Frame Material , 99% UV , Straight Back Temple Style , Non Adjustable Temple Adjustment , ANSI Z87.1 -2010 Standards , 8 Curved Base , 2.4 MM Lens Thickness , 26.9 Gram Weight