JumpSport fitness trampolines are known for their patented arched legs and EnduroLast cord suspension, which replaces steel springs with a quieter, smoother bounce that is easier on joints.We stock the range from the 39″ Premium through the 39″ Pro and the 550 PRO. Every model uses petal-shaped cords tuned for low-impact cardio, and all JumpSport accessories and replacement parts are stocked here.