Corning glass lens provides the best clarity in material Seawater corrosion resistant lens for an active lifestyle,100% polarization kills reflected glare and reduces eye strain, 100% UV blockage for maximum protection Non-varnish nylon frame: The traditional nylon frame is colored by spraying paint/varnish and essential oil on the outer layer to complete the coloring and polishing. BNUS uses plant pigments, which are cured at high temperatures when nylon materials are molded, without any harmful substances, chemical residues, and better oxidation resistance. You don’t even have to worry about pet bites or accidental eating, of course, you may lose a pair of glasses MADE IN ITALY: Get Italian sunglasses without the high price. Quality nylon frames with corning glass lenses for superior eye protection & color contrast. They'll last for years. Grab a pair today Glass lenses for sunglasses have numerous advantages. They provide exceptional optical clarity, minimizing distortion and offering a precise view. Glass lenses are highly scratch-resistant, maintaining their pristine condition for longer. They also resist chemical damage, ensuring long-lasting functionality. Moreover, glass lenses offer superior protection against harmful UV rays, safeguarding our eyes. Although slightly heavier, advancements have made them more comfortable. Overall, glass lenses excel in clarity, durability, and UV protection.