FATSAC Integrated Bow Fat Sac Ballast Bag - 425lbs - Gray [W711-GRAY]Integrated Bow Fat Sac Ballast Bag 425lbs Gray The FatSac Series Integrated Bow Sac makes for a quick and easy solution to add critical weight in the front of the boat for improved wake performance. The FatSac Series Integrated Bow Sac is designed to fit under the seats of open bow boats adding needed weight to the front of the boat for the perfect weight distribution. It will fit under the seats of any open bow boat so it's out of the way and the bow