This is the balance trainer that simulates the movements of a surfboard on water to provide the same muscle-toning, full-body workout. An actual surfboard is affixed to semi-inflated exercise balls that shift and displace air as you move, causing the board to tilt and forcing muscles in the legs, abdomen, and arms to work hard to maintain your balance. Free online video lessons taught by certified trainers demonstrate 140 basic movements including real surfing techniques such as carving (shifting your weight forward or backward to move up or down a wave), standing up in one rapid movement from a prone position, and duck diving (pushing the board down to go under an approaching wave). The surfboard comes with two cables that attach to the front and when pulled provide the same resistance as paddling through the ocean. The surfboard has three levels of stability, allowing those with no surfing experience or seasoned surfers to benefit from the lean-muscle building, aerobic, and core strength workouts. The surfboard is only 1' above the floor, enabling users to quickly remount if they lose their balance. Supports up to 350 lbs. 70" L x 24" W x 1' H. (30 lbs.)