S4 is designed for myopia adult snorkelers/beginners on the surface of the water.
Provides clear visual with lenses ranging between -1.00 and -6.00 myopic lens.
Double air flow channels and full face mask for natural comfortable breathing through nose and mouth.
Shatterproof polycarbonate window for added safety anti-fog and anti-leak technology.
Pure medical silicone material Non-Toxic Odor-Free,comfortable to wear.
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