Were you not to turn off that trampoline in the old days? Then the Tunturi 4 folding Fitness Trampoline is for you. On this small trampoline you not only relive your childhood, you also put more than 400 muscles to work. With every jump you make on this trampoline, you improve your fitness, metabolism and figure. In addition, you burn more calories on the Tunturi 4 folding Fitness Trampoline than when running.