KJ T-SPRING PowerShoe - BLUE (PAIR) – Adjustable/Interchangeable Tension Bands to fit your weight of usage. This is replacement T-Spring for KJ-PowerShoe series only.
3 way adjustable T-spring: 3 bands (all bands intact) 2 bands (remove the center band) 1 band (remove two outer bands)
This T-Spring model features: the new 4 Twin Turbo System (for improved balance & rebound), and the new SRS (Safety Release System). It is "Coil Spring Adapted" as well, which means that you can attach the optional steel Coil Spring to customize the compression resistance of your KJ Rebound Shoes.