The Hydra is the world’s first and only water relaunchable trainer foil. Extremely stable and easy-to-fly, this closed cell ram-air foil has no bladders to inflate or replace, yet it floats on water. Closed cell technology with drainage system provides water relaunchability strong workmanship with stitched Dyneema bridle for strength. Third line included for maximum safety and ease of relaunch in any position. Perfect kite for kitesurf schools. MPH 4 - 29. This is the 3.5 meter Hydra, so it has a lot of power. It can be used with a SUP board as well.