Detailed Product Description Optical Frames,reading glasses frames optical eyeglasses optical spectacles frames.aluminum temples and spring hinge,flexible.1).Meets Standards: CE,100 UV protection, AS/NZS1067:2003; EN1836:2005:2). Curve:4.5 base design eyeglasses, Demo lens or reading lens to match.3). Comfortble to wear,flexible for any face for the spring hinge aluminum temple,acetate tip.