The Eyak sportstyle sunglasses have special lens technology that filters out annoying glares from the sun and water, giving you a calm view. 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 Double injected temples made of polycarbonate and rubber Rubber nose pads and temples tips ensure they stay in place Integrated steel hinges Nickel free Polarised SINTEC Smoke Icy Blue Oil Lens: Category 3: 15% light transmission Suitable for low to bright light/sunny conditions