Elvex Anti-fog Sphere X Ultimate wrap style safety glasses provide 99% UV protection. Unique frame with ventilation slots allows for air flow & minimizes fogging. Temples adjust to four different lengths. Dual lens construction allows best possible peripheral vision. Universal non-slip nose bridge provides secure fit. standard. Complies with ANSI Z87.1-2010( ) and CE EN-166 standard. WELSG51GAF.