Features:- Middles is a laid-back staple from the Del Mar Series, designed for effortless style from beach days to everyday wear. The round unisex shape is crafted from lightweight bio-acetate with a 4-base curve that feels natural and easygoing. With signature Del Mar detailing and a versatile fit, Middles brings a clean, coastal aesthetic to any lineup. A simple, timeless frame made for a life lived near the water.- 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.