This latest PRO Series model is ideally designed for strong athletes and/or heavier users (over 90kgs 200lbs). It can return up to 2X the energy of the standard XR Series.This Pro series model features the new TS-Pro7 T-Spring with 4 TwinTurbos PLUS 2 separate Steel Coil Springs which can be added to the TS-Pro7 to make the spring system harder (for extreme weights or extreme uses). It incorporates all the latest patented Swiss KJ technology and the new, heavy duty ShellXH, as well as the SRS (Safety Release System).The multi-size liner, adapts perfectly to several sizes.
How does KJ Pro7 compare to KJ-XR3?
KJ Pro7 IPS (spring system) is harder to compress. It can return up to 100% more energy than the XR series models. The shells are wider and longer(on size L/XL only ). Their new, patented T-Spring design is the most versatile developed to date: you can add a strong steal spring in-between the 2 bands, to adapt the compression to your workout. For instance, plyometric exercises (explosive strength training) require a maximum compression resistance. Jogging a milder one.