Dual-pane lens combines optically correct polycarbonate outer lens with interior acetate lens (Thermo Lens System) which traps and isolates high heat or extreme cold in between the lens system and away from the face, providing excellent resistance to fogging. Frame is resistant to cold and heat and provides a perfect facial seal. Special indirect ventilation system located at the top and bottom of frame allows airflow and heat release. Offers protection from excessive glare and provides 99% UV protection. Includes wide adjustable elastic strap with quick-release. Exceeds MCEPS Ballistic standards. CE EN166 certified. Meets ANSI Z87.1+ High Impact standard. Certified to the requirements of the CSA Z94.3 standard.