Comprehensive Saddle Fitting & Measurement Guide

At Premium Saddle Shop, we believe that proper saddle fit is essential for both horse welfare and rider performance. A well-fitted saddle distributes weight evenly across the back, prevents soreness, avoids restriction of movement, and enables precise communication.

Whether you are fitting a dressage, jumping, or all-purpose saddle, this step-by-step guide walks you through measuring your horse and evaluating saddle fit at home.

1. Quick Check: Signs of Poor Saddle Fit

Before taking measurements, assess how your horse and current saddle setup are performing.

Signs Your Saddle May Not Fit

Dry Spots: Uneven sweat patterns after a ride where pressure points block sweat glands.
Behavioral Resistance: Pinning ears, tail swishing, dipping the back during tacking, or reluctance to move forward.
Physical Soreness: Sensitivity along the back muscles or swollen area behind the shoulder blades.
Rider Instability: The saddle tips forward, tips backward, or slips to one side while riding.

2. Tools You Will Need

To take accurate measurements for your horse and evaluate saddle tree sizing, gather the following:

Flexible Curve Ruler (or 24″ Heavy Wire): For tracing the contour of your horse’s back.
Flexible Fabric Measuring Tape: For measuring seat size and shoulder angles.
Chalk or Masking Tape: To mark key anatomical points on your horse.
Paper & Marker: To transfer your wire trace onto paper for reference.

3. Step-by-Step: Measuring Your Horse’s Withers & Back

Make sure your horse is standing square on a flat, even surface (such as concrete or rubber matting) with their head in a natural, neutral position.

                  Step 1: Locate the Scapula (Shoulder Blade)
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             Step 2: Place Wire 2 Inches Behind the Scapula
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             Step 3: Mold Wire Over Withers & Transfer to Paper

Step 1: Locate the Shoulder Blade (Scapula)

Feel along your horse’s shoulder to find the back edge of the scapula bone. The tree points of your saddle must sit at least 2 inches (5 cm) behind the scapula to allow full shoulder rotation.

Step 2: Take the Wither Trace

Take your flexible curve ruler or wire and bend it gently over the horse’s withers, exactly 2 inches behind the shoulder blade.
Press the wire down so it snugly conforms to the shape of the withers and shoulder slopes on both sides.
Carefully lift the wire off the horse without altering its shape.
Place the wire on a sheet of paper and trace the inside curve with a marker.

Step 3: Determine Tree Width

Compare your traced curve against our standard gullet width templates:

Gullet Width	Profile Description	Typical Breeds / Body Types
Narrow / Medium-Narrow	High, prominent withers with steeper shoulder angles	Thoroughbreds, warmbloods with high withers
Medium	Average wither profile with balanced shoulder angle	Standard Warmbloods, Quarter Horses, Sport Horses
Wide	Flatter, rounder withers with broad shoulder angle	Cob types, draft crosses, Native breeds, Iberians
Extra Wide	Flat back with virtually no visible wither rise	Cobs, Fjords, Haflingers, heavy draft breeds

4. Measuring the Rider: Determining Seat Size

Correct seat sizing ensures proper balance for the rider while keeping weight within the support region of the horse’s back (not extending past the 18th thoracic rib).

How to Measure Upper Leg Length

Sit upright in a hard-backed chair with knees bent at a 90-degree angle.
Measure from the back of your buttocks along your thigh bone to the front of your kneecap.

    Thigh Length (Inches / cm)          Recommended Saddle Seat Size
   ────────────────────────────        ──────────────────────────────
    Under 19.5 in (50 cm)         ──►   16.5" Seat
    19.5 in – 21.5 in (50–55 cm)  ──►   17.0" Seat
    21.5 in – 23.0 in (55–58 cm)  ──►   17.5" Seat
    Over 23.0 in (58+ cm)         ──►   18.0" Seat

5. Checking Saddle Fit on the Horse (The 5-Point Inspection)

Place the saddle directly on the horse’s bare back (without a pad) and evaluate these key checkpoints:

        ┌────────────────────────────────────────────────────────┐
        │                 SADDLE FIT CHECKPOINTS                 │
        ├────────────────────────────────────────────────────────┤
        │ 1. Wither Clearance (2–3 fingers between tree & wither)│
        │ 2. Channel Width (3–4 fingers clearance down spine)    │
        │ 3. Panel Contact (Even contact from front to back)     │
        │ 4. Shoulder Freedom (Tree points behind scapula)      │
        │ 5. Balance (Seat sits level, low point in center)      │
        └────────────────────────────────────────────────────────┘

Wither Clearance: There should be 2 to 3 fingers of clearance between the top of the withers and the pommel when the saddle is girthed up.
Channel / Spine Clearance: Look down the gullet channel from behind. You must see clear daylight down the entire spine with no pressure on the spinal processes or surrounding ligament.
Panel Contact & Flocking: Slide your hand flat under the saddle panels from front to back. Pressure should be firm and even without gaps (bridging) or hard pressure points.
Shoulder Freedom: Ensure the tree points do not restrict shoulder blade movement.
Saddle Balance: The lowest point of the seat should be near the middle, allowing the rider to sit