Workers wearing the ST1 eyewear can expect extreme comfort with this face-flattering protective eyewear from MCR Safety. Ratchet action temples combined with non-slip rubber head grips create a customized fit for virtually any head size. The wraparound lens is lightweight, scratch-resistant polycarbonate that filters 99.9% of UV rays and delivers advanced visual acuity and protection. Choose the best safety glasses, choose MCR Safety! This product meets the ANSI/ISEA Z87.1 2020 standard.