Khor combines safety with style. Interchangeable lenses. Scratch and fog-resistant lenses with 99.9% protection from UVA, UVB, and UVC rays. Tapered lenses to eliminate refraction. Polycarbonate lenses comply with ANSI Z87.1+ 2003 standards. Aqua Precision Red lenses maximize clarity and contrast. Frames with straight temples that don't pinch. Temple vents to keep you cool. Soft, pliable Megol material in temple tips and nose pads - fits more securely the longer you wear your safety sunglasses. Temples include EDGE-FLEX technology for flexibility and shock absorption. Glasses feature screws rather than plastic connectors at the temples for strength and durability.