Straight Line Sumo V (750 lb +) Ballast Bag 2011: Bigger, easier to use and built for a better wake experience, the Straight Line Sumo V (750 lb+) Ballast Bag is ready to have you hitting a huge wake. Built of a flexible, puncture-resistant material with an easy folding, sandwiched, woven Polyester core, the Straight Line Sumo V (750 lb+) Ballast Bag is nearly indestructible. A centered handle and three pipe fillings make all filling and draining easier than ever.