If you are looking for a tough, large, and stylish frame, you will love the Sinner Montara sunglasses. Features: Polarised SINTEC® lens ensures clear vision: Eliminates reflections from flat surfaces, thus providing greater visibility and comfort Reduces 99.9% of blinding glare while filtering blue light to increase contrast and improve depth perception in a wide variety of weather/lighting conditions Has a soothing effect on the eye and reduces eye strain 100% UV protection Durable polycarbonate lenses Lightweight polycarbonate frame material Nickel free Polarised SINTEC Gradient Smoke Lens: Category 3: 15% light transmission Suitable for low to bright light/sunny conditions Gradient from dark to light Polarised SINTEC Smoke Lens: Category 3: 15% light transmission Suitable for low to bright light/sunny conditions