This is the Hog Zenith Octopus Yellow For Scuba Diving Features: Pneumatically Balanced 2nd stage. Venturi On/Off New front cover which improves the performance, function, durability, and styling. Soft touch silicone center. 40 Inch Hi Viz Yellow Flex Hose The Hog Zenith Octopus Yellow is a Balanced second stage with Venturi on/off. The H.o.g. Zenith Octopus Yellow lives up to the Brands tag line of Highly Optimized Gear" and was awarded Testers choice in ScubaLab 2014 Regulator Review. Since then it has built a reputation of Having the Performance of a High-end regulator at an affordable Price. This second stage is Balanced and has a high-end silicone front purge that will last for years to come. "