From the Manufacturer
The Reinforcer provides an ergonomically-position handgrip pattern on the temple for a secure grip.
Meets ANSI Z87.1+ standards. Offers 99.9% UV protection. Handgrip pattern on temple and impact resistant safety glasses also offer a polycarbonate lens. Reduces eye fatigue. Distortion free lens also has a soft, rubber nosepiece. No. DPG58 1C: Clear No. D