Whether you're knocking back some Pina Coladas with your toes in the sand or taking care of business on the volleyball court, the Costa Del Mar Motu Polarized Costa 580 Polycarbonate Lens Sunglasses have a relieved face curve for total comfort and an optical-quality spring hinge that leaves you with nothing to worry about. The polarized Costa 580 polycarbonate lenses eliminate the harsh reflected glare found at the beach while reducing eye strain, and are also lightweight, impact-resistant, and scratch-resistant to withstand your rough-and-tumble summertime adventures. The heavy-duty TR-90 nylon frame is crafted tough to ensure these shades stay with you for years, while the included hard case keeps them protected when the sun goes down.