Fit Overs Navigator sunglasses are designed with POLARIZED front & side lenses that eliminate glare enhance contrast & provide superb optical clarity. The flexible frames ensure outstanding comfort. The Hypo-Allergenic crystal nylon frame provides comfort & durability. The removable brow distributes weight evenly around the face allowing the frame to "float" above the Rx eyeglass. The impact-resistant lenses meet ANZI-Z80.3 safety standards. Frame: Tortoise Lens: Amber Polarized Fits over frames not exceeding: 131mm X 48mm