If you want the best...
Professional jumpers have to change their chinese springs every month as they lose their strength.
Our springs last all the season of professional use or for a lifetime for hobby jumpers.
These fiberglass/ kevlar springs are compatible with A-Jump and PowerStrider (AirTrekkers/ Up-Wing).
- much better durability than the chinese ones
- kevlar protection
- 22% lighter than the chinese springs (50-70 kg model)