Ultra-light and sport-inspired, the Flathead features a dielectric frame with a 9.25 base curve lens and no metal parts. Vented TPR nose-piece and sure-grip TPR temple ends perform great in all demanding environments, including ones that require ARC flash protection. Lens: Indoor/Outdoor. Frame: Crystal Clear. Technology: All Bullhead Safety Eyewear is made from 100% virgin materials, featuring lenses and frames constructed with the highest quality polycarbonate.