Here's what other sites are saying:
Precision optics, polarized performance, and lightweight comfort are combined in the intrepid look of Optic Nerve's Fragment Sunglasses-so get out and enjoy.. . . . Fit works well for medium face shapes. Polarized Brown lens tint provides 18% light transmission for general, bright sun conditions; offers advanced acuity, definition, and contrast; does not dramatically alter color perception. 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. TR90 Grilamid nylon frame material for enhanced performance and lightweight feel-durable and resilient nylon for a snug, comfortable, secure fit. Lenses meet ANSI Z80.3 standards for optical clarity, UV protection, and impact resistance. RX: prescription ready
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