Bestseller - purging is simple with this user-friendly design.
Features include:
- Smooth internal bore with flexible drop away bottom section.
 - Safety whistle built into bottom section.
 - Snorkel retainer allows for a quick ratchet adjustment.
 - Purge valve to assist with water clearing.
 - Low profile exhaust section to ensures no water retention.
 - Replaceable silicone mouthpiece.
 - Made from high grade crystal silicone.