1.LATEST SAFETY BREATHING SYSTEM – The fullface snorkel mask features an improved, larger breathing tube and a unique breathing system. It helps us absorb more oxygen, thereby reducing potential CO2 buildup and hazards. While snorkeling, you will not feel dizzy or even suffocated from inhaling an airCO2 mixture. This maximizes and ensures a comfortable and secure snorkeling experience. 2.HIGHQUALITY MATERIAL – The snorkel mask made of hard PC/liquid silicone is , nontoxic, and odorless. The interior is made of soft silicone, which protects your and does not cause headaches when worn for long periods. The elastic headband is comfortable to wear and suitable for various head shapes. 3.180° PANORAMIC VIEW – Our snorkel mask features transparent, flat lenses that do not distort your underwater vision and avoid dizziness or discomfort. The 180° panoramic view provides a clearer view of the marine world. It has additional detachable mounts for action cameras. 4.AMAZING ANTIFOG AND ANTILEAK TECHNOLOGY – The exhaust channel doubles the ventilation speed, preventing exhaled gas from entering the visor and fogging it up. It uses foodgrade silicone with good elasticity. The enlarged silicone edge fits your face better and effectively prevents leakage. The deeper silicone lining does not exert too much pressure on the bridge of your nose.