1.【180°WIDE VIEW SAFE TEMERED GLASS LENS】：diving mask is with nose cover, which is perfect for users who do not know how to stop breathing by nose when swimming, snorkeling or diving. Lens of our diving masks are made by tempered glass, which is safe and different from normal swimming goggles with plastic lens. 2.【SILICONE STRAP＆SKIRT】：swimming mask is with soft food grade liquid silicone strap, environmentally friendly and healthy, providing an extreme comfortable using experience. The highly easy adjustable mask buckles and flexible face skirt, perfectly engineered to fit virtually any face shape and heads in different sizes. 3.【SILICONE MASK STRAP 】：With quality and softy silicone mask strap, avoiding hair tangling and providing more comfort. The strap cover will worked great to protect your hair from pulling it as you put it on and took it off, providing an extreme comfortable using experience. 4.【EASY-ADJUSTABLE SIDE BUCKLES】： scuba mask fit to users with head in different sizes. The key point to avoid the leakage is to tighten the mask and you can feel that the silicone skirt is fully absorbed on your face. 5.【Best Gift】：The ideal diving mask for children swimming, bathing and snorkeling is the best gift for children.