Straight Line SUMO MAX 755 2Step (Grey) Ballast Bag

SUMO Skin 1000D
SUMO Sacs are made with "SUMO Skin," Straight Line's own flexible and puncture-resistant fabric.  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 the competitors', making it the most durable ballast bag available.

SUMO Seams
Every SUMO sac is double welded to ensure a watertight seal.  Straightline's tough SUMO Skin is overlapped and hot air welded.  You can see the smooth and clean seams on the outside of every bag.  A second welding operation applies an inch wide sealing tape to the inside of every seam.

SUMO Max Flow Link Valve
Straight Line's new SUMO Max Flow valve is a new 1.5" diameter high-flow version of the SUMO Link system.  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.

Link Valve
Straight Line's 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.

1" NPT Valves
New, easy-turning cap with a perfect watertight seal pressure tested up to 6 PSI.  A 1" NPT ports allow built-in ballast systems to fill, drain, and vent quickly for hassle-free operation.