[2020 Most Safe Patented EasyBreathing System] This State-of-the-art full face snorkeling mask has a patented respiratory system with dual breathing tubes, separates expiration from inspiration mechanically. Inspiration enters through the dual breathing tube.Separate breathing chamber effectively prevent against CO2 build up, which ensure fresh air is always circulating through the scuba mask.

[Medical original material and Anti Leak Technology ] full face snorkeling mask Made of High Quality PC and Medical Grade Silicone. Non-toxic and environmental, which can prevent skin allergic or other skin problems caused by original materials. Soft silicone mask liner can prevent sea water from leaking perfectly and be attached to your face snugly, two floating balls will seal the top of the snorkel when submerged, which can prevent salt water from getting into the breathing tube.

[The difference between K2 and K3 diving masks] Both diving masks use [Medical original materials and anti-leakage technology] The full face snorkeling mask is made of high-quality PC and medical-grade silicone. The K3 diving mask is the latest model this year. Compared with the K2 diving mask, the K3 diving mask has a longer detachable snorkel, which is lighter in weight. However, the snorkel of the K3 mask is fixedly connected to the main body of the diving mask， rotation adjustment is not possible. The breathing tube of the K2 diving mask and the main body of the diving mask can be rotated.