Fly High Pro X Series Fat Sac: The original Fly High Fat Sac has been redefined Pro X Series style. Still providing the ultimate weight addition, the Fly High Pro X Series Fat Sac has been reconstructed to provide increased durability and a new and improved ease of use. When full you are able to add 750 pounds, increasing the wake of your vessel by not only making it bigger but stronger as well. The Fly High Fat Sac is also perfect for your wake surfing needs it will fit right next to the engine allowing you to increase the wake to be perfect for surfing on the side of your choice. Stick with the classics, but benefit from innovation with the new and improved Fly High Pro X Series Fat Sac sitting in your boat.