Frame Material: Plastic Lens Material: Plastic Lens Width: 63mm Bridge: 15mm Arm: 130mm Maui Jim Sunglasses style Lighthouse is a lightweight & durable rx-able rectangular nylon rimless frame designed with pin hinges & rubber nose grips for perfect comfort. The Lighthouse can be worn in salt water. The PolarizedPlus polycarbonate lenses are scratch/impact-resistant, provide superb optical clarity, and completely eliminate annoying glare.