Snorkeling full face diving mask swim mask 180 degree snorkel mask

1.Inhaling and exhaling separate channels(Double air-flow channels structure)for anti-fogging

2.Broadside dual sealing design is from imitating human face.It is made of medical silicone without skin irritation,which is Eco-friendly and non-toxic odor.

3.Four adjustable elastic fabric headband design,suitable for all kinds of head shape.

4.180 degrees Wide viewing window design for good vision.