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Does size matter? This question often sparks interesting discussions and amusing conversations. However, in this blog, we’re addressing the size of the saddle tree, a crucial element in horse riding.
When I began my journey as a saddle fitter 13 years ago, my knowledge was limited to saddle length sizes (e.g., 17″, 17.5″). Initially, I wasn’t fully aware of the complexity involved in tree sizes and widths. In the saddle fitting course, we learned about the shapes of the horse and the tree, which are important, but the there wasn’t much emphasis on determining the correct tree size for a specific horse.
During our saddle fitting training, we discussed V-shaped and U-shaped pommels. We were taught that U-shaped pommels were more suitable for wider horses. However, in practice, I find that V-shaped pommels are actually better for wider horses with low withers. For narrower horses, achieving adequate spinal clearance can be challenging if the tree isn’t sufficiently open at the top. Moreover, real-world application is more nuanced than simply categorizing trees as U or V-shaped, as most pommel shapes fall somewhere in between. Additionally, saddle manufacturers rarely classify their trees in such binary terms.
One crucial aspect overlooked in saddle fitting training was the actual width of the tree, measured in centimeters, or steel-to-steel measurements. Understanding how to measure this correctly is vital. Correct tree size is essential for wither clearance and proper support. The tree points should align with the ribs, ensuring the saddle rests on the shallower part of the ribcage. Towards the withers, the vertebrae come up and the ribcage ‘dives down’. The tree points need to stay in touch with this bearing ribcage.
A tree that’s too narrow will cause the saddle to sit too high in front, shifting the rider’s weight to the back and creating pressure there. This can lead to extension issues in the horse’s back.
Unless with very short tree points (17cm and shorter), I haven’t come across damage in the horses’ tissue from a tree that was fit too narrow.
On the other hand, a tree that’s too wide might not be as visibly noticeable but can cause the tree points to press on vertical muscles instead of the ribs. This restricts muscle function and hinders the horse’s ability to lift its withers, affecting overall biomechanics. Excessive load from a too-wide tree can damage the tissue around the tree points.
Getting the tree size right is crucial for both horse and rider happiness. Years of experience have taught me a lot about determining the correct tree size, but the horse’s comfort is the best indicator. Testing different settings will reveal the optimal size. So, let’s be clear—size does matter. And a happy horse means a happy rider!
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