Premium Coated Tempered Glasses: Built with high-quality tinted coated glass lenses, effectively filter strong light and block harmful rays in bright outdoor environments. Equipped with a protective explosion-proof film, the lens will not scatter into fragments even if cracked. The scratch-resistant glass delivers outstanding underwater clarity. Advanced Anti-Fog and Panoramic Vision: Adopting professional long-lasting anti-fog coating, provide far better anti-fog performance than ordinary diving masks. The one-piece panoramic lens design greatly expands your field of view. Adjustable and Secure Fit: The multi-directional side buckles allow for customized adjustments to fit a wide range of face shapes. The Y-shaped silicone strap provides a strong, secure grip while offering a comfortable, low-pressure fit. Leak-Proof and Wide Silicone Seal: The wide, flexible silicone skirt conforms closely to facial contours for a tight, watertight seal. Its generous width ensures maximum coverage, while the compact inner cavity optimizes your field of view. Weight: 0.62 pounds.