SUMO Sacs are made with our own flexible and puncture-resistant fabric, “SUMO Skin.” It has a durable 1000D polyester core that is heat laminated to lightweight PVC skins with a bonding agent. This sandwich construction is 150% stronger in tearing tests and 37% higher in tensile strength than our competitors, making it the most durable ballast bag available.
Every SUMO sac is double welded to ensure a watertight seal. The SUMO Max Flow valve provides the same hassle free watertight connection to your Sumo Pump but with massive 50% LARGER intake. The Sumo Max system is 100% compatible with the classic Sumo and Big Bag ballast systems. The unique LINK™ system provides a hassle free connection to your Sumo Pump, keeping your boat dry on the inside. The Link™ Valve is watertight and can also be used as a convenient way to purge air from your bag. And with the NEW easy turning cap with a perfect water tight seal. Pressure tested up to 6 PSI. Our 1” NPT ports allow built in ballast systems to fill, drain and vent quickly for hassle free operation.