Whether you're casting for bonefish off the Keys or kicking back on a SoCal beach, the Costa Del Mar Playa Polarized 580 Glass Lens Sunglasses offer premium optics and slick styling for water sports and casual wear. Designed with a polarized 580 glass lens, these shades provide greater optical clarity and improved scratch resistance over those with polycarbonate lenses. And because these sunglasses are equipped with LightWave glass, you'll notice they're much thinner and lighter than standard polarized sunglasses with glass lenses. The polarized lens cuts glare coming off shimmering ocean waters and blinding blacktop roadways for enhanced optical clarity. Costa's 580 technology blocks visible blue and yellow light, allowing for reduced hazeblur on super bright days. Additionally, these shades come equipped with a lightweight, super tough nylon frame that's durable enough for active wear without worrying about premature breakage.