For those who own KJ-XR3 and KJarmstrong XR models, there is good news! You can easily find replacement shells available for these models. What's more, these replacement shells are also compatible with older XR series models, as long as you replace either both upper or both lower shells together. This ensures a proper fit and optimal performance of your Kangoo Jumps rebound shoes. By offering replacement shells, Kangoo Jumps provides a convenient solution to refresh and renew the outer structure of your KJ-XR3, KJarmstrong XR, or older XR series models, allowing you to continue enjoying the benefits of these fantastic shoes.