100% UV protection reduces eye fatigue and long-term sun damage; High-quality, long-lasting pin hinges equipped with Cam Motion to pop temples into place with ease; SPY+'s 4-base polycarbonate ARC lenses are injected in a unique tapered shape; Constructed of Bioplastic, which is comprised of 50% organic plant matter that is both lightweight and durable and aids in reducing plastic consumption; All SPY+ lenses are Optical Class 1 quality; Optical grade polycarbonate lenses deliver crystal-clear, optically superior, distortion-free vision; SPY+'s revolutionary therapeutic HAPPY lens tech is scientifically tuned