The trouble with most Silicone necklaces on the market is that they just don't fit properly over the 2nd stage regulator mouthpiece. Hit the second stage and it drops out of the necklace defeating the whole purpose of the necklace to begin with
The OMS platinum cured silicone necklace has been engineered with a higher durometer to better hold the regulator mouthpiece and prevent breakage or tear failures.
This rugged necklace comes in 2 sizes: Primary = short 7.5" (19 cm) O.D. and Secondary = longer 9" (22.8 cm) O.D.
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