Does shape, material, or elasticity matter?

The girth is one of the most fundamental pieces of tack in your horse’s wardrobe, but it’s also one of the most underestimated. For many of us, choosing a girth is often an afterthought: leather or synthetic, shaped or straight, perhaps with elastic on one end, and then we’re off.

But research over the last decade has revealed that girth design can significantly affect pressure distribution, breathing mechanics, stride length, and even behaviour. Subtle discomfort in this small area can ripple out into performance issues, girthiness, tension under the saddle, and resistance that may be misattributed to poor training or saddle fit.

So, does shape, material, or elasticity matter? Let’s explore what science – and experience – say.

What does the girth actually do?

The girth’s primary job is simple: keep the saddle in place. But, how it does this, and what pressure it applies and where, can have biomechanical consequences.

The pectoralis muscles, which run along the underside of the chest, are highly involved in forelimb motion. A poorly designed or incorrectly fitted girth can compress these muscles, limit thoracic expansion, and restrict the horse’s ability to move and breathe freely.

The science

Several key studies have explored girth pressure and its impact on performance:

Pressure mapping and girth tension (von Peinen et al., 2010)

• Horses wearing standard straight girths experienced peak pressure just behind the elbows, with forces reaching over 10 N/cm².
• These pressure points were associated with observable signs of discomfort, including shorter stride length and back tension.

Anatomical girths and performance (Greve and Dyson, 2014)

• Horses fitted with ergonomic girths showed increased front limb protraction and longer stride length at trot and canter.
• Some horses displayed less resistance to saddle placement and girthing over time.

Elasticity matters (Clayton et al., 2020)

• Girths with too much or too little elastic create uneven tension across the sternum.
• Single-ended elastic girths often twist or torque the saddle, while double-ended or centre-elastic designs tend to be more stable and evenly distributed.

Shape

Straight girths

• Traditional and simple.
• Tend to concentrate pressure behind the elbows.
• May not contour to the horse’s natural shape, particularly in horses with a forward girth groove or a short space between elbow and girth line.

Anatomical girths

• Shaped to curve behind the elbows and relieve pressure on the sternum.
• Often improves freedom in the shoulders, especially in short-coupled or compact horses.
• Best when positioned precisely, and not all anatomical shapes suit every conformation.

Stud guard girths

• Used in jumping disciplines for protection from hoof strikes.
• Often quite bulky and stiff.
• May impair movement if too tight or placed incorrectly.

Material

Leather

• Durable
• Classic look
• Can stiffen or rub if not regularly maintained.
• Good for sensitive horses when lined and soft.

Neoprene

• Grippy, flexible, and often distributes pressure well.
• Easy to clean.
• Can cause sweating and friction in hot climates.

Fabric girths

• Light and breathable.
• Best for hacking/light work, as often not supportive enough for jumping or schooling.
• May slip if the saddle doesn’t fit well.

Sheepskin-lined girths

• Great for sensitive skin.
• Distributes pressure more evenly.
• Needs regular washing to prevent bacteria and matting.

Elastic-end girth

• One-ended elastic creates asymmetry, often causing the saddle to shift toward the elastic side.
• Two-ended elastic is generally best for even tension and saddle balance.
• Girths with no elastic offer maximum stability, but can feel restrictive, so use with care, especially on young or sensitive horses.

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Top tip

A girth should be firm but not tight. Always check tension at the lowest hole on both sides, and never rely solely on the saddle’s stability to judge fit.

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Signs your girth might be a problem

• Girthiness or flinching during tacking up.
• Tension upon mounting or in the first ten minutes of work.
• Lateral resistance or stiffness in the shoulder.
• Cold-backed behaviour or bucking in early trot.
• Saddle slipping sideways or forward.
• Sudden development of girth galls or rubs.

Checklist for better girth fit and function

• Does the girth sit behind the elbows without pinching?
• Is it evenly tensioned on both sides?
• Can the horse breathe deeply and move freely at all gaits?
• Is the material suitable for your horse’s skin and climate?
• Does it stay stable without over-tightening?
• Have you tried different shapes or types if your horse shows resistance?

Final thoughts

The girth may seem like a small part of the puzzle, but it plays a crucial role in the horse’s comfort, posture, and willingness to work. Choosing the right design, material, and elasticity isn’t about fashion. It’s about listening to your horse, staying open to experimentation, and remembering that every piece of tack affects the whole.

Before you reach for another supplement or training gadget, check the basics. Because sometimes, the key to a better ride is hiding under the belly.