Get ready for bigger and better wake with the help of the Eight.3 Boost Sac. The boost sac is filled with solid steel shot, and because of its increased density over water-filled bags, is easy to move around your boat. A boost sac is ideal for situations when you need only a small amount of weight to create your wake, not the hundreds of pounds you get when utilizing water ballast. Reinforced nylon handle allows easy carrying. 12"L x 8"W x 3"H. One-year warranty.