- Environmentally Friendly Construction: Made from nontoxic, tasteless silica gel that is soft and comfortable. The durable PC material ensures no deformation, making the mask stronger and lighter. - Anti-Slip Design: Features a professional anti-slip buckle with a concave-convex design for easy adjustment, ensuring a secure fit to prevent slipping and falling off. - Safety First with Tempered Glass: The diving mask is equipped with tempered glass lenses and a nose cover, ideal for users who prefer to breathe through their nose while swimming. The high-precision adjustment knob allows for secure lens strap fitting. - Two-Way Waterproof Valve: The advanced waterproof valve automatically closes when submerged in water, keeping the mask dry. The innovative anti-wave system enhances calm breathing by preventing water intrusion during waves. - Premium Silicone Strap: Crafted from soft, food-grade liquid silicone, this mask offers excellent elasticity and comfort. The adjustable mask buckles and flexible face edge ensure compatibility with a variety of face shapes and head sizes. - Practical Use Cases: Perfect for snorkeling, swimming lessons, or open-water swimming, this mask allows for an enjoyable experience in the water without worrying about leakage or discomfort. Ideal for both recreational and professional swimmers looking for reliable performance.