Saddle Fitting

At Circle Y, we believe that a proper saddle fit, ensuring comfort for both horse or mule, is the foundation of every great ride. That’s why we offer a thoughtfully designed selection of tree fits tailored for trotting, gaited, foundation, and draft horses, as well as mules.

Not sure where to begin? Explore our fit guide below. And if you’d like more personalized support, our experts are here to help, simply send in a few videos, and we’ll provide guidance to ensure the best fit for your partner on the trail.

Myths and Misconceptions

First, let's address some common myths and misconceptions regarding saddle fit.

Myth: Gullet Size Determines Fit

Gullet size is commonly used for saddle fit, but 60 years of fitting saddles has shown that this is not accurate or reliable. The gullet can only be accurately measured on the bare tree of the saddle, before it's assembled, so it won't be the same measurement that you can take on your horse. Most importantly, not every saddle with a specified gullet measurement will fit the same. The angle and twist of the bars affect how the saddle will fit, so a narrow and extra wide saddle can share a gullet measurement while maintaining completely different fits.

Misconception: Saddle Fit is Consistent Across Brands

While we keep saddle fit consistent between Tucker, Circle Y, and High Horse saddles, there is no standardization for tree fit in the Western saddle industry. This means that, while semi-quarter horse (SQHB) and full quarter horse (FQHB) fits may be useful as general guides, your horse may not need the same size in every brand, which is why Tucker doesn't use those terms.

Myth: My Horse is Really Tall, so He Needs a Wide Tree

Actually, the horse’s height has nothing to do with proper tree fit. You’ll want to look at the horse’s conformation starting at his withers – are they well defined or are they rounded? Is his back typical or dropped? Answering these questions first will help your horse enjoy a comfortable saddle fit. More important than height will be the shape of your horse's back and the length of the spine.

Misconception: My Saddle is Pinching, I Need a Wider Tree

Not always. If the bar angle is too wide for the horse, it will pinch at the contact point. If your horse has a narrow “A” shape, the saddle may be too wide. In the illustration, you can see the same horse shape with three different tree fits. The wide example pinches at the top of the bars, with no contact at the bottom of the bars, and the gullet sits too low. The narrow example pinches at the bottom of the bars, with no contact at the top of the bars, and the gullet sits too high. The good fit shows even contact throughout the bars and the angle of the bars matches the angle of the horse.

Myth: My Horse's Breed Needs a __ Tree

We hear this a lot, from thoroughbreds to drafts to quarter horses to Tennessee Walkers. What we've found is that, while some breeds may generally share attributes that lead to similar fits, there is still plenty of room for variety. While most vanners will use wide or extra wide trees with rounded skirts, we've fit them and other draft crosses and even full draft horses in regular trees due to the shape of the individual horse.

Where Fit Matters

Fitting the Tree

When fitting a saddle, it’s essential to focus on where the saddle will rest on your horse’s back—and most importantly, on the tree itself. The tree is the true foundation of saddle fit, spanning roughly 8–9 inches on either side of your horse’s spine and extending the length of their back.

One additional consideration is back length. If your horse has a shorter back, a saddle with a round skirt is often the best choice. While this won’t affect the actual fit of the tree, it will help ensure balance and comfort without adding unnecessary length.

Things to Consider

Before Fitting

Age and maturity of the horse.
A saddle you buy for your two-year-old today may not fit as well when he fills out in another year or two.
As a mature horse progresses into its senior years, changes in conformation can alter the fit of your existing saddle.
Consider the body condition of the horse you are fitting.
Significant weight gain or loss can alter the way a saddle fits.
Look at your horse as an individual and not a breed type.
Identify if there are any conformation issues to address.

Front Cinch

Do not over-tighten the cinch because it will create more pressure before you sit in the saddle. Especially, do not over tighten the cinch to compensate for a saddle that rolls. Make sure the saddle correctly fits the horse. Try a different saddle pad (make sure you aren’t over-padding), or use a wider cinch, neoprene cinch, or flank cinch to help secure the saddle. The front cinch should be about as tight as your belt - if it’s comfortable for you, it should be comfortable for your horse. This rule of thumb applies to general trail riding, not extreme trail riding. Use discretion and consult a trainer if necessary.

Flank Cinch

Most people use the flank (rear) cinch incorrectly. It provides stability to the saddle and should be snug (not tight) against the horse. A rule of thumb is to be able to slip two fingers between the flank and the horse at the apex of the belly. It should not be loose or hang below the horse’s belly-a loose flank cinch is a danger to the horse and rider. Always use the connecting strap between the front and rear cinches to position the flank cinch properly and prevent it from becoming a “bucking strap”. If the back of your saddle is moving side to side or up and down at the walk, trot, or canter, the movement can cause a scrubbing action, irritating the skin, over time these can scar and become white spots. We recommend that you use a flank cinch.

Padding

Don’t over-pad your horse. The more pads you use, the wider it makes your horse, and the higher your saddle will sit on the horse’s back (the saddle will roll easier, more leverage being higher). Excess padding will not allow you to feel the horse’s movement as well. If you are riding for extended periods, you need a pad to absorb sweat and dissipate heat.

Natural fiber pads and blankets are more breathable and comfortable for your horse. Wool is an ideal example of natural moisture-wicking and shock-absorbing properties. Neoprene is a shock-absorbing material and is great for performance horses that will not have a pad on all day, but we don't recommend them for long trail rides. Neoprene doesn’t breathe or absorb moisture, and white spots, rubbing, and pulling of the hair follicles can occur.

Cleaning and Storage

Keep your horse’s back clean, taking special care where the saddle, pad, girth, and other gear will sit as dirt is abrasive. The movement of the horse and the rider creates movement of the saddle. The abrasiveness of dirt combined with movement can cause skin irritation. Your horse’s back should be cleaned, brushed, vacuumed, or washed and dry before and after riding to remove sweat and dirt. Keep your blankets, pad, and cinch clean.

Rider Balance

Consider how you sit in the saddle. For the tree to function, you must sit balanced. If you sit in the saddle like a recliner with your legs out in front, you exert twice as much force on the back of the bars and dig the bars into the horse’s loins. The rider must sit in a balanced position, vertically with your legs under you. This position allows the bars of the tree to function properly and spread pressure equally front to back. Heavy riders require the tree to distribute more pounds per square inch on the horse. For this reason, proper saddle fit and equitation are critical with a heavy rider.

Conditioning

A horse is no different from a human athlete; horses get sore muscles when they are not in shape. Long trail rides, once-a-month barrel races, or competitions when a horse is not in the proper condition will make a horse’s back sore. When pressure is applied to an unconditioned horse’s back, swelling will occur which will accentuate or create saddle fit issues. If you feel heat or swelling after long or strenuous use of your horse, let his back rest and heal.

Do not jump to the conclusion that your saddle does not fit if you find your horse's back is sore due to being in poor condition. A horse’s back will drop when it is not in condition or is overweight. When this happens, bridging of the saddle tree can occur. Strong abdominal muscles support and straighten the back of both the horse and the rider. Daily riding and conditioning will keep your horse’s back tough and strong.