Named after the famed surf break that has wowed visitors for generations, Ulu features a sophisticated soft square lens shape, with a core-wire temple and bold filigree design pulled straight from the waves it was named after. This handmade, Bio Acetate constructed frame, is perfect for exploring far of f cultures, or cruising to your local BBQ. Costa's 580 lenses are designed in-house by light spectrum experts to enhance colors thanks to multi-patented technology that absorbs harmful high-energy blue light (HEV), enhances reds, blues, and greens, and filters out harsh yellow. The 580 lenses are also scratch resistant, and and 20% thinner and 22% lighter than other polarized lenses on the market. Features: Handmade, Bio Acetate constructed frame580 lenses: Scratch resistant and enhances clarity20% thinner and 22% lighter than other polarized lenses on the market Costa Ulu Black Frame Sunglasses w/Gray 580G Lenses 06S2014-20140156