This state-of-the-art technology improves both shock - absorption and bounce performance. It’s the first and only single-bed trampoline that can be tuned for different age, weight, and skill levels, yet it also broadens the performance spectrum so that jumpers with a wider range of weights and skill levels can safely enjoy the same set up.  The heart of the PowerBounce system is our patented TripleStage-DualSpring™ assembly. Each assembly consists of two High-Performance springs mounted on our PowerArm™ fitting. The upper, Primary Spring locks the PowerArm™ into the V-ring, while the lower, PowerSpring™ attaches to one of the PowerArm’s three stages--the top, middle, or bottom setting. Soar to new levels! The PowerArm™ linkages work like levers as the PowerSprings stretch, and this significantly improves the bounce performance. The bottom setting provides the best combination of shock absorption and performance because it super-stages the springs