180°|Snorkel Mask|Half Face Snorkel Mask|Snorkeling Mask with O₂Tech Advanced...

Description

180°|Snorkel Mask|Half Face Snorkel Mask|Snorkeling Mask with O₂Tech Advanced....
O₂Tech-Breathe naturally and comfortably through your nose and mouth while using O₂Tech. One-way valves and a separate breathing chamber ensures fresh air is always circulating through the mask. It provides 90 percent easier work of breathing compared to other full face snorkel mask on the market. This can escape CO2 buildup at all.
• Fashion and Patented design-The 180° S3 snorkeling was created by our team of well experienced product designers and engineers in Singapore. Through meticulous iteration we evaluate from full face to half face, it improved the breathing system, bulky design, outlook, fit, leaking, No glasses and safety issues. We also used 3rd party experts to measure the airflow and CO2 elements of the mask ensure a safe user experience.
• MATERIAL AND SIZE-180° Half Face Snorkel Mask Made of Food Grade PC and Medical Grade Silicone. Non toxic and environmental, which can prevent skin allergies or other skin problems caused by original materials. The size is measured from the nose to the bottom of your chin. If more than 4.7 in(12cm), this is a L/XL. And should fit.