Maui Jim Duke sunglasses are specifically designed for the dedicated sportsman, whether on land or sea. A smaller version of the Kahuna, the modified aviator style Dukes are crafted from the finest Monel metal for durability. The temples have been crafted with high grade Zylonite, ensuring easy adjustability and comfort. All Maui Jim sunglasses ELIMINATE GLARE & ensure 100% UV PROTECTION & optical clarity.dt>:Size: 57-18-135 mm