Featuring indirect ventilation channels on the foam and sub-frame, these glasses provide superior dust filtration, keeping debris out of the eyes. Their frameless unilens design also offers excellent peripheral vision, while their quick-release hinge system converts from temples to headband (both included). Uvextra® anti-fog coated lens are standard too. Meets ANSI Z87.1-2010. Blocks 99.9% of UV rays. 100% dielectric. Black frame.