The Fly High Pro X Series Nautique Wedge sacs are shaped to fit on top of the angled rear tanks on Team Edition Nautique v-drive boats. They have a lower profile but still each deliver 800 lbs of additional weight to the stern of most Air Nautique Wakeboard Boats. Combine these bags with the Fly High Pro X Series Integrated Bow Sac to create the size and shape of wake that the pros ride.