Smith's iconic Guide's Choice sunglass re-engineered to meet Smith Elite's demanding MilSpec standards. Optional ChromaPop lenses provide an unfair advantage for operators scanning a hostile environment. Product Details Vision ChromaPop+™ lenses are polarized to cut glare and enhance contrast and natural color to make the details pop Carbonic lenses offer impact resistance and clear optics Lenses meet MIL-PRF-31013 clause 3.5.1.10 ANSI Z87.1 compliant Anti-fog and scratch-resistant coating on all lenses 100% UVA/B/C protection Fit / Integration Megol nose and temple pads for no-slip fit Frame Nylon frame 8 base frame