Please note that these knee blocks will also work on the GPD and GPJ styles of THV Saddles made by Frank Baines (Zenith, Felix, Matrix and Nexus).
All of these THV Saddling saddle have the hook (hard) side of a hook/loop fixing system that is attached to the loop (soft) hook/loop material at the front of a THV Saddling saddle. This makes it possible to remove the knee blocks or re-position them to work for individual riders.
There is a difference in the shape between the knee blocks that go on a GPJ, GPD or Dressage style. The GPJ has a more pronounced curve to follow the shape of the GPJ panel and flap and the knee blocks for the GPD are straighter. Please make sure you choose the blocks that are relevant for your saddle.
If you look in the drop down menus for the options available you will see that the knee blocks are available in black or brown.