The most common pictures that I receive when being asked if a saddle is bridging or not are these:
It is thought that the areas with no dust are an indication that the saddle is not touching in these spots when it is in fact often the opposite. This has inspired me to write a post decoding what a dust pattern is actually saying to a saddle fitter.
The following pictures will summarize what a good looking dust pattern is and why this is what we are looking for.
Picture 1: This is from a horse who was ridden without a saddle pad during a saddle fitting. One of the reasons we do this is so that the dirt doesn’t get stuck as a mirror image on the pad but stays on the horse. This is so we can see if the saddle is straight and if there are any pressure points.
Picture 2: This pattern is first of all showing us that the saddle isn’t sitting on the shoulder or behind the ribcage. These are both indicated by the blue lines.
Picture 3: The area highlighted in yellow is where the least amount of movement happens in the saddle. The more movement the more dirt is brought up from under the hair. This is a good, large, section under the saddle that is sitting stable on the horse.
Picture 4: The area highlighted in green is where there is a little more movement under the saddle. It is important that the entire saddle is not clamped down to the back of the horse. As we move towards the cantle there is more flexion and movement in the back and the saddle needs to allow for this. Also changes in direction effect the saddle more towards the cantle.
Picture 5: This last area, highlighted in red, is where we see the most movement in the saddle. It shows us that the shoulder is able to move under the front of the saddle creating a dirt mark at the front and that the back edge of the saddle isn’t pushing into the loin but is allowing it to move. When this saddle was being ridden in it did not rock or bounce, but allowed for the natural movement of the back. You can also see that the dust is staying well away from the spine keeping the pressure across the ribs.
If your saddle is giving you a dust pattern that look like this or close to this you most likely have a good fitting saddle.
Below is a sweat and pad dust pattern or if this was reflected in the pad a pattern that would concern me for bridging:
If you have any questions about your own saddle pad patterns please feel free to send a picture to me at firstname.lastname@example.org and I will be happy to evaluate them. I am also available for on site consultations in Northern California.