PRODUCT ADVANTAGES:Breathe comfortably and High Security:New breath separation design with added exhalation system. In addition to exhaling through the breathing tube, we can exhale directly from the mouth, and there will be no residual carbon dioxide inside the mask, which will not cause dizziness to play for a long time.180 full face design with Optical polishing mirror:Unlike other traditional snorkeling goggles, our mask can provide you with a wider field of vision and clearer mirror , thus opening a whole new world of underwater adventure.Comfortable to wear:This diving mask is made of hard polycarbonate, non-toxic and odorless; it is wrapped with soft and thick imported medical liquid silicone + elastic elastic band to ensure your safety and not hurt your head for a long time.Completely Anti-fog and leak-proof:Independent inhalation and exhalation channels can prevent the mask from fogging.It has an anti-fog coating on the lenses and anti-fog inserts; Plus, its advanced leak-proof silicone seal technology (with dual float) keeps water out of the mask.About the choice of size:We recommend that you choose Adult type for L/XL if your chin is more than 4.7 inches (12 cm) away from the bridge of your nose, or Kids and Teenager type for S/M if it is between 4.7 and 4 inches.A gift for beginners:Our masks are easier to use than traditional diving masks, more friendly to beginners and young people, making them the perfect gift for friends and family. Wear this sporty snorkeling mask for an unforgettable vacation.ADVANTAGES OF FOLDED-SNORKEL:FOLDED-SNORKEL DESIGN:Fold the tube by gently push a button,you will never worry about the falling-off or leakage during your snorkeling, This mask will serve you for a long time and perfectly solves the non-folding snorkel masks' problem and the installation difficulties, like easily damaging the buckle and easily lose your snorkel mask. How to choose the size?Firstly,Measure the length from the Eye to Chin.If the length is 10- 12 cm (4-4.7 inch ) , Choose size S/M. (Suitable for The Junior and Adult Woman)If the length equal with or over 12 cm (4.7 inch),Choose size L/XL(Suitable for Adult Men)Specification:Name: Diving maskMaterial: PC+ABS+siliconeRegular color: Blue/Black/Green/Pink/OrangeSize:S/M size: 48.5*37*27CML/XL size: 59*38*43CM Package List:1*Diving mask+2*Earplugs+1*Camera Mount