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 580G Lightwave Glass lenses provide superior clarity and are scratch-resistant Encapsulated mirrors between layers of glass are scratch-proof 20% thinner and 22% lighter than average polarized glass Technology: Polarized lenses protect against UV rays and filter out unwanted glare Thin temples with Hydrolite(TM) slide easily under a hat while offering a comfortable, nonslip grip Additional Details: Manufacturer Limited Lifetime Warranty