80% of your saddles fit is the tree
A question we are often asked is what is the tree in a particular model.
This isn’t really relevant
What is important is having a tree shape that suits the profile of your horses back (about 80% of the fit) then we use different panel types and shapes and then girthing to provide a good fit.
Trees are used to distribute the rider weight and the panel provides an interface between horse and rider to enable the best weight bearing surface.
They are designed to protect the horses sensitive back structures from the rider and so being rigid is important