Features:- Shipwrecks offers clean lines and timeless simplicity, designed as a square-frame essential for sun-soaked days. Part of the Del Mar Series, it’s built with lightweight 4-base bio-acetate and finished with signature Costa detailing. The shape strikes a balance between classic and contemporary, making it easy to wear from morning surf checks to sunset bonfires. A coastal staple made for clarity, comfort, and laid-back living.- Premium Polarized 580 Lenses. Filtering reflective glare is essential for anyone on the water or outdoors. We sell only polarized sunglasses.- 100% UV Protection. Your Costas absorb 100% of UV light, providing you the best in light management and protection.- Scratch Resistant and Durable. The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning.- Costa 580® lenses were designed by in-house light spectrum experts to enhance colors because standard sunglass lenses fell short.- The lens' multipatented technologymanages light by:- Absorbing Harmful High-Energy Blue Light (HEV).- Enhancing Reds, Greens, and Blues.- Filtering Out Harsh Yellow.