Optical clarity is at its highest when you break the water’s surface in the Promate Optical swim goggle. Lens Features: Available in negative diopters -1.5 to -8.0. Made from durable polycarbonate. Panoramic design for visual clarity. Offers UV protection from the sun’s harmful rays. Anti-fog lens technology. Frame Features: Sleek, low-profile build. Optimal inner eye fit. Gasket rests snugly and securely in the eye socket. Cushioned silicone seal. Four interchangeable nose pieces. 100% PVC- and latex-free construction. Imported. This product may have a manufacturer’s warranty.