Fluid Dynamic Deflector - Directs airflow straight to the mouthpiece for a natural breath with minimal interference. Vortex Assisted Design - The Directed air is turned in to a vortex which improves sensitivity and performance. The item "Mares Rover Octopus" is in sale since Monday, September 26, 2016. This item is in the category "Sporting Goods\Water Sports\Scuba & Snorkeling\Regulators". The seller is "european_outdoors" and is located in NY.