For all-day cool comfort on the water or off, the Nines Optics Shasta Sunglasses have you covered. Built using a TR-90 thermoplastic material in the frame, these sunglasses are flexible, lightweight, and durable. NIRTECH Polarized and NIR lenses are effective at blocking harmful rays. Each pair of Shasta Sunglasses has anti-glare, anti-reflective, and hydrophobic coatings to help keep your lenses clean and give you the clearest vision possible. Built with 9 layers of lens protections and top-of-the-line technologies, these sunglasses are cool, comfortable, and effective.