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Fits your bite pattern exactly.Can be easy and repeatedly to shape.
It can be applied for deep-diving , free diving equipment, fits most standard regulators.
If there are a little loose, you can use the given tie belt to tie, prevent water leakage.
Regulator/snorkel can hang in your mouth without biting down the mouthpiece tabs.
Special design mouthpiece to reduce jaw fatigue and increases comfort.
Sweet48 Moldable Mouthpiece,Scuba Diving Mouthpiece with Tie Wrap,Comfort Silicone Scuba Diving Snorkelling Moldable Bite Mouthpiece Regulator AccessoriesBlack Black B07VNVRWCJ