Basic Parameters: Lens Material: PC, Frame Material: TR90, Product Type: Reading Glasses. Features: High-Strength Lightweight Material, Wear-resistant, drop-resistant, crystal clear, optimized thickness design, lightweight, sturdy, scratch-resistant, waterproof, and oil-proof. Smooth image without jumping. Can be worn all day long, suitable for people with presbyopia, especially helpful for reading, watching TV, playing games, traveling, partying, and fishing. They protect your eyes in extremely low light and sharp vision conditions.