Ready to face the sun? Zeal Optics Brewer Sunglasses gives you ultimate protection in an attractive, durable, and eco-friendly design. Z-Resin bio-plastic frames with Proflex rubber provide an enduring flexible fit with impact resistance. Equipped with AutoSun, Ellume bio-plastic lenses with scratch-resistant coating deliver 95% High-Energy Visible protection, changing from low-light yellow to high-visibility persimmon for enhanced clarity and detail from dawn to dusk. They also block 100% of UVA/B and UVC radiation. The Brewer's classic medium-large wayfarer design includes two-stage Camloc hinges that lock temples into place.