The DEWALT® reinforcer rx safety glass combines safety glasses with a reading glass. Magnification diopter molded directly into safety lens. Handgrip pattern on temple is ergonomically positioned for secure grip. Soft, rubber non-slip nosepiece provides maximum all day comfort. Tough, polycarbonate lens is impact resistant. Distortion free lens provides fatigue free use. Safety glass exceeds ANSI z87.1+ standards. Povides 99.9% uva/uvb protection.