The Costa Del Mar Women's Bimini 580G Polarized Sunglasses offer an iconic style that brings beachy vibes from the Bahamas to your hometown. Their polarized lenses deflect all those harsh rays, and they're made of 580G glass for superior clarity, scratch-resistance, and thin lightness. Costa made the frame out of a bio-based resin for an environmentally friendly construction that doesn't harm the beaches you love to relax on.