Evolution of the Tri-Flex Spring
The Cellerciser® uses the patented Tri-Flex spring that offers support, movement, adaptability, and lift. It’s the only self-adjusting spring of its kind, adjusting to the weight of the person using it and to the height that the person is jumping. It stretches from the middle, and the weight is gradually absorbed as needed through the tiered-tapered ends allowing the body to accelerate and decelerate smoothly and safely with added support.
Most other rebounders use little tube springs that can cause nerve damage, knee problems, and lower back pain.