Obviously; the rebound air is a different color than the other 2. Is it a different material? Is it just a coating? What about Tensile strength? did you ask the manufacturer for their C.O.T. certification of tests? That was just a quick google search on testing springs.
Actually the more coils & the heavier the spring makes the bounce harder & stiffer. I own a cellerciser & reboundair all honesty the Reboundair is a superior product. The Cellerciser is a ver stiff rigid bounce & it makes a lot of noise when using it. I used for one work out and I got sore knees & back from it. The Reboundair is smoother, quieter & much quieter not to mention easier on the knees & back. I have been rebounding for over ten years and I give the Reboundair my recommendation.
thank you for sharing your experienced comment. Question, does the ReboundAir spring ends break after awhile due to metal fatigue? I had a Needak and their spring ends did not last long.
This person does not know what he is talking about. How many coils, as well as the rest of what he is saying is simply his opinion. Nothing scientific about it. Ridiculous.
