If you need safety glasses to wear over your prescription eyewear, MCR Safety has you covered! The Klondike® OTG (over the glass) series features an oversized frame and lens to fit over most prescription glasses! This series has a soft, permanently bonded TPR brow guard to help keep out trash debris. The temple arms are streamlined and bonded with TPR to give the wearer a more comfortable experience. Each Klondike® OTG also features a 3-position adjustable temple length that allows for a more personal fit. The rugged polycarbonate lens filters 99.9% of harmful U.V. rays, up to 385nm. The OG212PF has a gray lens and is coated with MCR Safety's MAX6® superior anti-fog lens coating! If you are searching for the best over the glass safety glasses, look no further than MCR Safety! This product meets the ANSI/ISEA Z87.1 2020 standard.