The Optic Nerve Alloy Sunglasses boasts a anti-reflective lens technology and a hydrophobic coating which protects against water, oil, dust and sweat for improved clean ability and durability. Great for any outdoor activity that takes you on or around water since the polarization blocks 99.9% of the glare that Bounces of water, snow and even rock. Fit works well for larger face shapes. Polarized Smoke lenses provides 15% light transmission for bright sun conditions; offers true, accurate color definition (no contrast properties). Precision Optics with 100% protection from harmful UVA/UVB/UVC rays. Polarized lens technology for reduced glare from reflected light-lens performance is maximized on or around water. Polycarbonate lenses for high impact resistance. Hydrophobic coating protects lens from water, oil, dust, and sweat for cleaning ease and durability. Nickel silver alloy frame for durability, luster, firm resilience, tension, and stability (coated for hypoallergenic performance). Durable, sleek line-less spring temple hinges provide enhanced comfort and security. Gimbaled rocker nose pads offer adjustability, durability, and increased comfort. Four-point frame fit for a well-balanced, secure, comfortable fit. Lenses meet ANSI Z80.3 standards for Optical clarity, UV protection, and impact resistance. RX: prescription ready. Color: Dark Gunmetal. Lens Color: Polarized Smoke. Dimensions: 7.2"L x 2.5"W x 3.25"H.