②CERTIFICATED QUALITY - Polycarbonate shatterproof lense, it has impact-resistance and scratch-resistance. Polycarbonate is highly transparent to visible light, with better light transmission than many types of other lenses.
③LIGHT-WEIGHTED & COMFORTABLE - These Aviator Sunglasses made with metallic alloy that is ultra light weight, strong and durable. It comes with sturdy spring hinges, soft skin-friendly nose pads and irritating-free temples which allows for maximum comfort and flexibility.