Determining proper saddle size requires measuring several key areas of your horse’s back, including its length and the width across the shoulders and back muscles. This process is central to achieving a good fit, which protects your horse’s health and improves riding comfort.
Saddle shopping can feel tricky. You are not just buying a seat; you are buying a piece of equipment that rests directly on your horse’s spine and muscles. A poorly fitting saddle causes pain, stiffness, and long-term back damage. Getting accurate horse back measurements is the first step to success. This guide will walk you through the simple, accurate steps for determining proper saddle size using basic tools.
Why Accurate Measurement Matters for Saddle Fit
A correct saddle fit is vital for both horse and rider. Think of it like shoes. If your shoes pinch, you cannot run well. If a saddle pinches or bridges, your horse cannot move freely.
The Dangers of Poor Saddle Fit
A saddle that is too narrow pinches the muscles and rubs the skin. A saddle that is too wide might slip side to side, causing the rider to constantly shift balance. A saddle that is too long puts pressure on the horse’s loins, which are weak areas near the tail.
- Muscle Soreness: Constant pressure causes tight spots in the back muscles.
- Gait Changes: Your horse might shorten its stride or resist being mounted.
- Behavioral Issues: A painful ride can lead to bucking or refusing to move forward.
- Long-Term Damage: Chronic pressure can lead to bone changes or ligament strain.
This detailed process will help you build a solid foundation for your saddle fitting guide.
Essential Equine Measurement Tools
Before you start, gather the right gear. You do not need fancy or expensive gear. Simple tools work best for reliable results.
Tools Needed:
- Flexible Tape Measure: A standard tailor’s tape measure is ideal. Avoid stiff metal tapes.
- Ruler or Yardstick: For checking the stability of the tape measure against the horse’s body.
- A Helper (Optional but Recommended): A second person can hold the tape steady, especially for tricky spots like the wither.
- Marker or Chalk (Optional): To mark the precise starting and stopping points on the horse’s coat.
- A Soft Blanket or Towel: To help you simulate the feeling of a blanket or thin pad under the saddle.
Having these equine measurement tools ready ensures you can take precise saddle measurement techniques consistently.
Step 1: Assessing Horse Conformation
Before you take a single measurement, you must look at your horse. This horse conformation assessment tells you what shape your horse’s back is, not just how long it is. A good saddle maker uses this information, too.
Key Conformation Points to Observe:
- Shoulder Angle: Does the shoulder slope back sharply, or is it more upright? This affects how much space the front of the saddle needs.
- Withers Shape: Are they high and prominent (like a Thoroughbred) or flat and broad (like a Quarter Horse)? This affects the rise of the pommel.
- Back Length and Shape: Is the back short and strong, or long and somewhat weaker?
- Spine Clearance: Look closely for any dips, bumps, or signs of previous poor saddle fit (like scars or hair loss).
Remember, many modern saddles use a saddle tree size guide based on width and angle. Your visual check helps you select the right general category before measuring depth.
Step 2: Measuring the Horse Back Length
The horse back length measurement dictates the overall length of the saddle panel. The saddle should never sit on the horse’s loins.
Accurate Horse Back Length Measurement Technique:
- Position: Have your horse standing square on level ground. Keep them relaxed.
- Start Point: Locate the point of the shoulder where it meets the curve of the neck, usually right behind where the saddle flap would sit. Place the start of your tape measure here.
- End Point (The Crucial Spot): You must find the last rib. Run your hand along the curve of the horse’s barrel until you feel the end of the last rib bone.
- The Lumbar Area: Measure from the point of the shoulder, along the curve of the back, to the spot just before the soft, fleshy loin area begins. This is the area right before the back slopes down to the croup (tail attachment).
Important Note: Some fitters measure from the base of the neck to the last rib, but measuring just the saddle-bearing surface (point of shoulder to last rib) is often more accurate for determining panel length.
| Horse Type Example | Typical Measurement Range (Inches) | Notes |
|---|---|---|
| Small Pony | 13 – 15 inches | Often requires very short panels. |
| Average Adult Horse | 16 – 18 inches | Most common measurement. |
| Large Draft/Warmblood | 19 – 22 inches | Requires longer panel length for support. |
The goal is to ensure the back of the saddle flap ends well before the loins begin. This measurement is key for overall saddle size selection.
Step 3: Measuring for Saddle Tree Width (The Gullet)
This is perhaps the most important measurement. The width, often called the gullet width, determines how high the saddle sits over the horse’s spine.
Technique for Gullet Measurement:
This measurement is tricky because the width changes from the front of the shoulder back toward the middle of the back. You need a measurement at the spot where the tree will sit securely.
- Locate the Point: Place your horse’s front leg straight down. Find the highest point of the shoulder muscle where the saddle will sit when the horse is moving. This is often just behind where the girth passes.
- Use the Template Method (Recommended): Instead of trying to measure across the spine with a tape, which is inaccurate due to soft tissue, use a template.
- Have a helper gently hold a flat, firm object (like a book or a specialized gullet gauge) vertically against the horse’s back, resting just behind the shoulder blades.
- Measure the distance from the spine (the top point) down to the horse’s side, just below where the saddle panel will sit.
- Repeat this on both sides.
- The Tree Angle Check: While the template is in place, check the angle of the horse’s shoulder against the template. If the shoulder slopes steeply, you need a narrower, more angled tree. If it is flat, you need a wider, flatter tree.
This measurement directly informs your saddle tree size guide. Trees are typically sized in increments (e.g., Narrow, Medium, Wide, Extra Wide).
Step 4: Evaluating the Withers and Shoulder Clearance
A saddle must clear the wither structure completely. If the saddle touches the sensitive areas around the spine or the ligament under the crest, it causes immediate pain.
Assessing Wither Clearance:
- The Two-Finger Test: Gently slide two fingers between the horse’s wither structure and the blanket where the saddle pommel would sit. You should be able to feel the bone but not press hard against it.
- The Movement Test: With the horse standing still, place your hand where the front of the saddle will go. Ask a helper to walk the horse forward a few steps. If your hand feels pressure or pinching as the horse moves its shoulder, the saddle is too narrow or too flat in the front.
This step highlights why measuring a horse for a bridle is different; a bridle deals with the head, while the saddle deals with the whole top line.
Step 5: Determining Flocking and Panel Depth
Once you know the width and length, you need to address depth and shape. This relates to how much padding (flocking) is needed to balance the saddle.
Looking for Bridges and Dips:
Have your horse stand square again.
- Bridging: If you can easily slide your hand far under the saddle tree in the middle of the back, the back is dipping slightly (swayback) or the saddle is too rigid and not conforming.
- Double-Sided Pressure: If you feel pressure right at the front (shoulders) and right at the back (loins), the middle of the saddle is too high—this is called “rocking.”
A properly flocked saddle should have even contact along its entire length when fitted correctly.
Step 6: Accounting for Movement (The Stirrup Bar Check)
A measurement taken while the horse is standing still is only half the story. A horse moves its back dramatically when ridden.
The Cinched Test:
- Simulate Riding: Once you have determined the appropriate size range using the static measurements, imagine placing the saddle on the horse.
- Girth Up Lightly: Bring the girth up snugly, but do not crank it down tight yet.
- Walk and Flex: Walk the horse around briefly. Watch how the saddle settles. Does it slide forward or backward? Does it seem to rise in the front or back when the horse takes a step?
The tree must be wide enough that the saddle stays put when the horse moves its shoulders underneath it. If the saddle slides backward, it often means the tree is too narrow or the wither angle is wrong.
Deciphering Saddle Sizing: English vs. Western
The measurements taken above primarily determine the required saddle tree size guide and panel length. However, how those measurements translate into a final purchase differs greatly between English and Western styles.
English Saddle Sizing
English saddles are generally sized by two main factors: Seat Size (in inches, typically 16.0 to 18.5) and Tree Width (Narrow, Medium, Wide, etc.).
- Seat Size: This is based on the rider’s measurements, not the horse’s. A 17.0 seat fits an average adult rider.
- Tree Width: This is determined by the horse back measurements regarding the gullet and shoulder angle.
Western Saddle Sizing
Western saddles are larger and distribute weight over a greater area, but fit remains critical.
- Seat Size: Also based on the rider (often 15 inches up to 18 inches).
- Bar Angle/Width: This is the Western term for the tree width. Western trees are often built specifically for breed types (e.g., Arabian, Quarter Horse, Gaited). The bars (the part of the tree that sits on the horse’s back) must follow the contour of the horse’s ribs accurately.
The Wither to Tail Measurement (A Secondary Check)
While the wither to tail measurement is sometimes used generally, it is less precise than measuring the actual saddle-bearing surface (shoulder point to last rib). However, it gives a general idea of overall horse size and helps confirm the required panel length.
If you measure from the highest point of the wither right up to where the tailhead begins, this longer measurement helps confirm if a horse is exceptionally long-backed, which requires a longer saddle panel to avoid pressure on the sensitive loin area.
Advanced Considerations in Saddle Fitting
Once the basic measurements are complete, a professional fitter looks deeper into dynamic fit.
How Saddle Padding Compensates for Minor Issues
Sometimes, a saddle is almost right. Padding can help bridge small gaps:
- Shims: Thin pads inserted into pockets in the saddle pad can lift one area slightly. For example, shims placed toward the front can correct very slight bridging (when the middle sinks too low).
- Wedge Pads: Used to adjust balance if the horse has a significant muscle difference side-to-side or a very flat wither.
It is vital to know that padding should never fix a fundamentally wrong tree size. Padding only fine-tunes the fit.
Dynamic Balance Check
When checking the fit, always look for signs that the saddle is rocking forward or backward when the horse moves its back up and down.
- If the saddle tips forward and pinches the shoulders, the tree is likely too narrow or the back profile is too flat for the tree shape.
- If the saddle tips backward, the front of the tree might be too wide, allowing the saddle to drop down behind the shoulder blades.
Common Pitfalls to Avoid When Measuring
Many new saddle buyers make simple mistakes that lead to incorrect sizing.
Pitfall 1: Measuring Over Thick Padding
Always take your measurements directly on the horse’s coat, or perhaps over a very thin, flat cooler. Measuring over a thick winter blanket will give you artificially large measurements, leading you to buy a saddle that will be too large when used with a normal thin pad.
Pitfall 2: Using a Stiff Metal Tape
A stiff metal tape measure forces the tape into a straight line, ignoring the subtle curves of the horse’s back. Always use a flexible tape measure that can follow the contours accurately.
Pitfall 3: Ignoring Asymmetry
Most horses are slightly uneven—one shoulder might be bigger, or one side of the back might have more muscle tone. If you notice a significant difference in your horse back measurements from left to right, you must address this with your saddle fitter, often through custom padding.
Pitfall 4: Confusing Wither Height with Back Shape
A tall horse (high wither measurement) does not automatically need a “Medium-Wide” tree. Wither height relates to the saddle’s height above the back, but the tree width relates to the muscle mass underneath the saddle panels.
When to Call a Professional Saddle Fitter
While this guide empowers you to take accurate static measurements, certain situations demand expert help.
Seek a professional fitter if:
- Your horse is young and still developing muscle.
- Your horse is an unusual breed (e.g., Friesian, Icelandic, native pony) not easily matched to standard sizing molds.
- Your horse has a known history of back pain or lameness.
- You are purchasing a very expensive, custom saddle.
A good fitter will take all your measurements, compare them against their physical gauges, and often watch your horse move under saddle. They are experts in translating raw data into the perfect saddle tree size guide selection.
Frequently Asked Questions (FAQ)
Q: Can I use my current saddle size as a guide for a new purchase?
A: Yes, but cautiously. If your current saddle fits perfectly and causes no pain, the basic measurements (length and width profile) should be similar. However, if you are switching brands or styles (e.g., English to Western), the underlying tree shapes differ greatly, so re-measuring is still essential.
Q: How often should I measure my horse for a saddle?
A: You should check the fit at least twice a year, especially if your horse is actively working or changing fitness levels. Young horses (under five) may need measurement every few months as they muscle up. Always re-measure if the horse gains or loses significant weight or changes discipline (e.g., going from trail riding to intense dressage work).
Q: Does measuring a horse for a bridle involve similar techniques?
A: No. Measuring a horse for a bridle focuses on the head: poll circumference, jaw width, and cheek length. While both relate to equipment fit, saddle measurement deals with the large, muscular, moving structure of the back, whereas bridle measurement deals with hard bone structure around the head.
Q: What is the difference between measuring for the gullet and measuring for the bars in a Western saddle?
A: In Western saddles, the gullet is the clearance space over the spine. The bars are the solid wooden or synthetic supports that run down the sides of the horse’s back, contacting the muscle. You must measure the width and the angle of the bars to ensure they sit flush along the ribs without pinching the spine or bridging across the muscle mass.