Metal Frame Plastic Lens Polarized UV Protection Coating Arm: 130mm UV400 Protection---100% lenses block harmful UVA, UVB and UVC rays, restore true color, eliminate reflected and scattered light, perfect eye protection. PREMIUM MATERIAL---The temples and frame are made of high quality metal, which is sturdy and durable with metal hinges. High quality TAC lenses are abrasion and scratch resistant. Stylish and Cool Design --- Retro Round Glasses. Maintaining its classic John Lennon style heritage while evolving to meet today's fashion demands. Retro fashion style makes you more attractive and eye-catching at outdoor events or parties. Versatile - Lightweight design for outdoor activities such as cycling, fishing, hiking, hiking, and more. Can also be used while driving to prevent glare from sunlight and glare.