EASE TO USE:The full face snorkel mask is very easy to use without any professional guidance,even for beginners and swimming enthusiasts without any snorkeling experience.Traditional snorkeling equipment requires biting the breathing tube and only allows breathing through the mouth.With a full face ventilation tube,you don't need to bite anything and can breathe through your nose or mouth CLEARER VISION:Our snorkeling mask uses high-definition PU resin flat lenses,eliminating the distortion of underwater vision that can cause dizziness and discomfort.With a 180 degree wide angle view,you can enjoy a clear underwater perspective,equipped with a sports camera mount,you can capture the wonders of the marine world and share them with your friends and family PROFESSIONAL BREATHING SYSTEM:Our snorkeling mask has three completely independent air passages (center air inlet,two side exhaust ports),two exhaust ports to quickly eliminate carbon dioxide and prevent fogging of the mirror due to airflow backflow,one center air inlet to provide fresh air for smoother breathing SAFE AND LEAK PROOF:The snorkel mask skirt that fits your face is made of food grade silicone,which is safe and environmentally friendly,non irritating to the skin,super elastic,and has good sealing to ensure that the mask fits tightly to your face and prevents leakage.There are quick release buttons on both sides of the mask for easy removal in emergency situations during snorkeling PROPER PURCHASE AND USAGE:Including WSTOO,all full face snorkel mask on the market are designed for recreational surface snorkeling and cannot replace professional diving equipment.It is not recommended for intense swimming or free diving.When snorkeling,be sure to take regular breaks and follow buddy rules: never snorkel alone