Costa Del Mar Mag Bay Sunglasses 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 You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!