
$89.95
The Duke is a full-face mask (FFM) and it is designed to give the user the opportunity to breathe easily. Obviously, it’s not the first of its type . In fact, we could say that Cressi’s Medusa mask was the first FFM but it didn’t separate the breathing chamber from the vision chamber. Cressi owned a patent for the Medusa mask. Our new system of breathing, that we have designed are patenting, becau
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