-Polycarbonate high-impact resistant lenses. Silicone face padding provides comfortable feeling and leakage proof. Double silicone head strap will not slip off when hard swimming, -Silicone Gasket The silicone adheres smoothly to the face and very comfortable -Polycarbonate Lens Resistant frictional force is 2 times and resistant impact is 4 times comparing as C.P. Used generally. -Premium Anti-Fog Overcoming the limitation of saturated vapor with anti-fog and last logger The entire Phoenix swimming goggleproducts are completely manuafctured in South Korea by utilizing South Korean materials excluding the anti-fog liquid (Japanese) and silicon raw material (Japanese). (Their quality is beyond comparison with other company products that are produced in China or Taiwan and sold in famous brand names.) Every Phoenix product has been produced in South Korea under 25-year-long tradition and knowhow. Phoenix Leports has produced South Korean top-quality products in the largest amount in the country.