Costa Del Mar Mag bay AA Tortoise Sunglasses Plastic frame Polycarbonate lens mirrored Mirrored coating Lens width: 61 millimeters Lens height: 41 millimeters Bridge: 27 millimeters Arm: 123 millimeters Hand built and backed for life 100% UV protection and Polarized for superior clarity Patented Technology blocks blue and Yellow light for better clarity and color during fishing Frame Material : Plastic Lens Material : 580Glass