Get ready to conquer any challenge with the Leupold Alumina Flip-Back Lens Protector 20mm Matte Finish! This isn't just any lens cover; it's a fortress for your optics. Experience the unparalleled security of powerful neodymium magnets, keeping your objective lens protector 20mm matte locked down. Triple O-ring seals provide maximum protection from the elements, ensuring your view stays crystal clear. Its precision-machined aluminum construction guarantees durability for all your adventures. This single 20mm objective lens cover means business, offering a reliable alumina flip-back lens experience you can trust.