Thanks to the Fly High W704 Tube Sac long and narrow shape, this fat Sac is perfect for adding that extra 370lbs of hidden ballast.
The Fly High W704 Tube Sac is the perfect shape for the ski locker found in the floor of most boats. It’s long and narrow profile also make it incredibly versatile for use in other areas of the boat, such as the bow walk-way, or in storage compartments and under seats. There’s a reason this is one of our most popular bags; it’s incredibly versatile and will fit in a number of locations depending on where you need ballast.
Whether you need additional weight up front for wakeboarding or if you need additional ballast under seats in the midship for surfing, the Tube Sac is the perfect size to fit in most ski and wakeboard boats.

Ballast Bag Port Placement
To the left are the approximate locations of the ports on this Fly High FATSAC Ballast Bag.

¾” Port Size
All Fly High FATSAC ballast bags use ¾” ports. Designed to filled/drained with the Pro X Tsunami Ballast Pump or the Supa Tsunami Pump for faster fill/drain times.

Portable/Integrated Solution
The Fly High FATSAC ballast bags are designed to be used as a portable ballast system in conjunction with the Tsunami Ballast Pumps. If you do decide to eventually integrate these bags, they do have integration compatibility.
Hand Crafted Quality
Made in Milwaukee
FATSAC ballast systems are the original choice for Wakeboarding and Wakesurfing. Trusted by leading boat manufacturers, FATSAC offers consumers a line of superior products developed through careful research and testing. Our products are specifically designed to provide added safety, convenience and improved performance without causing damage to your boat. By using our advance cutting machine, welding system and Valmex material, we can assure you that your FATSAC will be extremely durable and of the highest quality. FATSAC, crafted right here in Milwaukee, is your ballast solution.
PnP
W709-SUPA video test
Product Specs
Size | 62″L x 16″W x 10″H |
Weight | 370 lbs. |
Ports | 2 fill/vent – 1 drain |
Warranty | 1 Year |
Manufacturer | Fly High – view brand page |
Manufacturer Part # | W704 |
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