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What Customers Are Saying. The Zyppah is one of the best anti-snoring devices on the market, and itâs clearly the best mouthpiece by far. That being said, words donât mean much unless they have something to back them up, so weâre going to look at the positive and negative things previous customers have had to say.
Part 2: How do Dry Snorkels Work? Dry snorkels have a mechanism at the top of the tube that closes when you submerge under water. It also has a covering at the top to prevent surface water from splashing into the top of tube. The dry snorkel has a valve/hinge mechanism at the top. When you submerge underwater, accidentally or purposely, the hinge reacts via a float mechanism and closes onto the top of the tube and seals it which prevents water from filling the tube.