Fit & Design: Performance sport fishing sunglasses The same core performance features you love about the original, top-selling Ferg, now in an XL size Side shields and hooding help keep light from leaking in and offer maximum coverage Vented and fully-adjustable nose pads provide a customizable fit designed to help reduce fogging 580P Polycrbonate lenses are lightweight and impact-resistant Polycarbonate and Trivex are the lightest and most durable lenses Technology: Polarized lenses protect against UV rays and filter out unwanted glare C-WALL® is a molecular bond which is scratch-resistant Thin temples with Hydrolite™ slide easily under a hat while offering a comfortable, nonslip grip Additional Details: Manufacturer Limited Lifetime Warranty