TYR Hydrovision Water Sports Metallized Mask (Black Metallized/Silver) Hydro vision Swim mask is perfect for those swimmers who do not want to wear goggles or prefer a larger frame structure Larger mirrored lens design provides maximum visibility outdoors Provides universal one-size fits all and includes a nylon mesh pouch for storage and lens protection Uni body optical grade Polycarbonate mirrored lenses are UV and anti-fog protected Gasket skirt is soft hypoallergenic silicone for watertight fit and split silicone head strap is grooved to ensure secure fit Designed for masters swimmers triathletes fitness swimmers open-water swimmers and recreational swimmers