Nines Optics Douglas Sunglasses are built using NIRTECH Polarized and NIR lenses that are effective at blocking harmful rays. These sunglasses utilize top-of-the-line technologies and a cool, light, and comfortable design. Each pair of Douglas Sunglasses has anti-glare, anti-reflective, and hydrophobic coatings to help keep your lenses clean and give you the clearest vision possible. Built using a TR-90 thermoplastic material in the frame, these sunglasses are flexible, lightweight, and durable. If you are looking for a great, quality, stylish pair of sunglasses at a reasonable price, then Nines Optics Douglas Sunglasses are what you need!