Sunglasses / ski glasses (double lenses, anti-frost anti-fog design) Material Description: 1, UV lenses: UV index of up to 400, can filter ultraviolet and light, for the protection of ultraviolet rays on the cornea and retina. 2, PC lenses: strong impact resistance. PC lens Introduction: PC Lenes formerly known as Polycarbonate (polycarbonate) lenses, PC is a lightweight, wear-resistant, impact resistance and high transmittance of professional polyester material lenses, its excellent features are widely used in the aerospace industry, So it is called "space film". PC lens quality is very light, the proportion of only 1.5g / cm3, and water density similar to its low refractive index relative to the light transmittance is very high, the hardness of the international impact of the standard 2H-4 level, higher than the average resin sheet 10- 12 times higher than the glass lens 60 times higher. PC is commonly known as bulletproof glass, anti-ultraviolet, 3-5 years will not be yellow (ordinary resin will be yellow for a few months), the weight of 37% lighter than ordinary resin. 3, TPU frame: TPU full name thermoplastic polyurethane elastomer (Thermoplastic Polyurethane), environmental protection, wear resistance, aging resistance, oil, water, resistant to mold. High hardness, strong carrying capacity, impact resistance, shock absorption performance. 4, Frame cotton Material: double cotton, hot pressed cotton (can be multi-layer or single layer). 5, flexible high elastic lengthened headband wearing helmet is also suitable. 6, elastic: Material: cotton high elastic elastic band (add anti-slip belt) Features: free to adjust the length of the anti-skid (or ordinary) high elastic elastic band, can be adapted to any head wear. 7, features: safe and comfortable nice, the use of human optics design, clearance breathable, its vision and can block the strong wind, snow particles, fog and a variety of light.
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