Frame: polycarbonate resin, also known as bullet-proof plastic or plastic steel , colorless, transparent , heat tolerance , impact resistance, flame retardant, has good mechanical properties in common temperature. Features :1. Adjustable Nose Pad 2. Stainless Screw 3.Protect no rust from sweat Lenses: Explosion - proof PC lenses, Also known as transparent steel, with six properties of lightweight, heat-resistance, high optical clarity, impact resistance, UV cut and low birefringence, can effectively block UV, UV100% resistance. Process : Gold, silver, zinc sulfide plated in the lens surface can reflect visible light, infrared and r-ray to protect your eyes. Besides, it can reduce the reflected light of the lens surface to solve the problem in bright sunshine and to increase beauty.
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