Anti Fog: Goggle lenses have a special anti-fog coating to keep underwater vision clear. PC Lens: The lenses of this product are made of polycarbonate material for strength, durability and clarity. Adjust Strap: Adjustable strap for a perfect custom fit. Pro Lenses: Competition style lenses with soft eyecups. Visit us at www.aqualeisure.com. Limited warranty. Made in China to the design specifications of Aqua-Leisure.