Glass lenses for greatest clarity. Italian manufactured frames and glass lenses. Prescription in amber and gray only. Ideal for fly fishing and other water sports, these sunglasses have subtly rubberized frame finish and megol nose that provide a secure fit and comfort even when wet. Sunglasses have an eyebrow wrap frame that provides full range of protection. HVO Optical glass provides 100% UV and IR sun protection and surpasses the DBT (Drop Ball Test) by 3.3 times the international standard, making HVO glasses some of the most durable and safe glass lenses anywhere. With their combination of durability and clarity. If you demand the best vision possible while on the water, there is no other choice than these ideal sunglasses. Best for average face shapes. Cleaning is easy. Water beads off. Anti-reflective coating keeps eyes fresh and relaxed. 99.99% polarization efficiency, the best in the industry.No distortion or shifting of as your vision shifts. Lens color in amber, gray. Italy.