Lightweight over-the-glass unilens design fits over most Rx eyewear  Adjustable Duoflex cushioned temples  Made in USA Hazards Abrasion Airborne Particulates Biohazard Impact Regulations ANSI Z87+ - Meets ANSI Z87+ (High Impact) standard ANSI Z87.1/1989, CA 18,833 - Meets ANSI Z87.1/1989, CA 18,833 (http://www.mte.gov.br/Empregador/segsau/Pesquisa/CA_DET.asp?vNRCAProc=18833&Equipamento=00&NOEquipamento=&Fabricante=00&NOFabricante=) CSA Z94.3 - Tested by Honeywell to meet the requirements of the CSA Z94.3 standard