Tempered-Glass For Deeper Safety: Swim mask uses ultra clear thickened tempered glass with a safety film to withstand deep water pressure for diving or swimming. Scratch-resistant lens provides clearer underwater view. (Note: Don't toss on tile floors, jump into water with the mask, or scratch with sharp objects.) 180° Panoramic View & Anti-Fog Anti-UV: Advanced lens shape and thickened tempered glass with latest anti-fog treatment ensure crystal clear underwater experience without blurring or distortion. UV resistance protects face from sun rays. One-piece glass design offers better and wider vision. Easy Headstrap Adjustment Fits Most Kids: Suitable for 5-15 years old children. Straps can be adjusted by pressing the button buckle, which holds securely without creeping down in water. Tips to avoid leakage: Tighten the mask until the silicone skirt is fully absorbed on the face. (Adjusting straps requires patience.) Soft Silicone Prevent Leaking: Comfortable seal skirt and strap adopt soft silicone, molding to face shape for comfortable fit and watertight seal. No more leaks or discomfort. Soft liquid silicone face skirt fits various boys and girls, reduces face water pressure, and seals well during scuba diving, snorkeling or swimming. Waterproof Soft Nose Cover: Swimming goggles feature a soft silicone nose cover to compensate for increasing pressure while swimming, snorkeling or diving. Helpful for kids who don't know how to stop breathing through the nose underwater. Perfect for snorkeling and recreational swimming. Designed with safety so kids can focus on snorkeling. Color: As shown in the picture.