From epic outdoor adventures to chillin' in the backyard with friends, the Optic Nerve PK Thrilla sunglasses protect your eyes while their hip, throwback style protects your cool kid reputation. . Polarized Grey lenses provides 15% light transmission for bright sun conditions offers true, accurate color definition no contrast properties. Polarized lenses filter out 99.9% of reflected light, known as glare recommended for bright sun and variable light conditions lens performance is fully maximized onor around water. Precision optics and 100% UVAUVB sun protection. Polycarbonate lenses provide high impact resistance. Hydrophobic lens coating repels water, oil, dust, and sweat. Durable, resilient Grilamid TR90 nylon frame material provides a snug, secure, and comfortable fit. Lenses meet ANSI Z80.3 standards for optical clarity, impact resistance, and UV protection. RX ready.