$65.00
The Scupper Valve (SV) design is self-draining and delivers crisp, effortless clearing. Posi-lock flex retainer secures flex section and mouthpiece.
Dual silicone mouthpiece prevents over-clenching of teeth that would restrict air flow.
Rotational mouthpiece with ratchet indicators.SV1 has a conical flared top for high performance breathing.
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