Design Engineered to perform in the toughest of elements, Finlet features an 8 base wrap and finlet inspired side shields that provide coverage and protection from the elements Retainer ready temple tips allow users to affix any retainer of their choice to ensure their frames aren't lost while exploring The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning Double injected Hydrolite prevents delamination and ensures a long-lasting, high performing product Technology Costa 580(R) lenses were designed by in-house light spectrum experts to enhance colors The lens' multipatented technologymanages light by: Absorbing Harmful High-Energy Blue Light (HEV); Enhancing Reds, Greens, and Blues; Filtering Out Harsh Yellow 100% UV Protection: absorbs 100% of UV light, providing you the best in light management and protection Additional Details Costa Case and cleaning cloth included with sunglasses