* Metalless and Screwless Design. Acrylic Lens, plastic frame with unique flexible spring hinges. * Product Dimension: Frame width about 5.51 inches (140mm), Lens width about 2.09 inches (53mm), Lens height about 1.57 inches (40mm), Bridge (DBL) about 0.55 inches (14mm), Temple length about 5.43 inches (138mm). * Solid Construction: Meticulously built to withstand regular use without succumbing to damage. The screwless hinges guarantee the hinge's firmness, preventing any looseness, while the arms remain securely in place, eliminating the risk of screws falling out. * Enhanced Durability: These reading glasses offer reliable performance, as they won't break easily. The frame, as well as the ear arms, won't break easily, providing a reliable and sturdy product that users can depend on for extended periods. * Hypoallergenic Option: The absence of metal screw not only eliminates the risk of screw loosening or coming out but also minimize the potential for allergic reactions or skin irritation, guaranteeing a comfortable and irritation-free wearing experience.