Fat Sac Air Release Plug (W749) billabong 9 inch centre fin for

9 inch centre fin for a standard SUP track

saves fuel when not in use

Proprietary layered vinyl material designed specifically for ballast use

Diamond Bat-Tail Shape | Double Concave "V" at Ends

The front and back segmented sections deliver a vest that maximizes flexibility and comfort

Fat Sac Air Release Plug (W749) billabong 9 inch centre fin forThe Air Release plug is a direct replacement for the standard ballast plug used with Fly High wakeboard ballast bags, but allows you to easily "burp" excess air out of the bag by simply loosening the fitting slightly. You don't have to completely remove the fitting from the bag, and you don't have to worry about spilling a lot of water, just loosen to vent, and then tighten back down.