Fall is the season that exposes every fit compromise you made over the summer. Your horse’s coat is coming in. His topline is shifting — sometimes dropping if the workload eased off in August heat, sometimes actually improving if you had a good conditioning stretch. And almost without fail, the saddle that sat quietly in May starts doing something it was not doing before: migrating forward, tilting, sitting lower on one side, or generally moving in a way that tells you the fit you confirmed in spring no longer applies. This is not a coincidence, and it is not bad luck. It is a back-shape problem, and the Ogilvy Shimmable Half Pad exists precisely for this.
This post contains affiliate links. If you shop through them I may earn a small commission at no extra cost to you — and you’ll get my reader discount. I only feature gear I’d actually put on my own horses or wear for a full day in the saddle.
Why Saddles Slip in Fall (And Why a Standard Half Pad Does Not Fix It)
Before getting into the product specifics, let me be direct about the mechanism, because people reach for the wrong tool when they do not understand the cause.
A saddle that migrates forward — or tilts, or sits unevenly — is not just a girth problem. Girth tension can contribute, but if you are tightening your girth more aggressively to compensate and the saddle keeps moving, you are managing a symptom. The underlying issue is that the saddle panel no longer sits into the horse’s back the way it was fit to. In fall, this usually happens for one of a few reasons: the horse has lost muscle mass along the topline from reduced summer workload, the back has narrowed or flattened, or the horse’s asymmetry — which was always there — has become more pronounced as conditioning changes.
A quilted half pad or a standard memory foam pad adds cushion and distributes pressure. Those are useful things. But they do not change the geometry of where the saddle sits. If your saddle is pitched forward because the horse has lost muscle through the loin and the panel no longer has anything to bear on at the rear, adding even pressure to an already-tilted saddle just means the saddle tilts evenly. The problem persists.
A shimmable pad lets you add thickness selectively — at the front, the rear, or both — to level the saddle and stop the migration. That is a fundamentally different intervention. You are not just cushioning the contact; you are correcting the angle of the saddle relative to the horse’s back. For the fall horse whose shape has shifted, that correction is what actually solves the problem.
The Ogilvy Shimmable Half Pad: What It Is and How It Works
The Classic Jump Shimmable Half Pad at $240 and the Classic Dressage Shimmable Half Pad at $240 are the core products for this post. Choose based on your saddle — jump cut for a jump saddle, dressage cut for a dressage saddle. The mechanism is identical; the shape is discipline-specific.
The pad has built-in shim pockets at three locations: front, rear, and middle. Each pocket accepts inserts — Ogilvy’s Memory Foam Inserts / Gummy Inserts starting at $75 — and the inserts can be combined in different pocket positions to address the specific fit issue your horse is presenting.
Here is how to read that for the fall slipping-saddle problem:
- Saddle pitching forward, sitting lower at the pommel than the cantle: Start with inserts in the front pockets. You are lifting the front of the saddle to level it.
- Saddle sliding forward entirely, not pitching: The horse has likely lost muscle at the rear of the back and the panel has nothing to engage against. Start with rear pocket inserts to create a stop point.
- Saddle tilting left or right: Use inserts on the affected side only — a half-shim on one side at the front or rear. This is the asymmetry correction scenario, and it is extremely common in fall when one side of the horse’s back changes more than the other.
- Saddle bridging — elevated at both front and rear, rocking in the middle: Middle pockets address this, though bridging is a more complex fit issue that I would always want a saddle fitter to confirm before shimming.
The practical advantage of this system is that you can adjust it yourself, between rides, without a fitter present. That matters in fall precisely because the horse’s back is still changing. A shim configuration that is correct in October may need adjustment in November. The Shimmable Half Pad lets you track those changes and respond to them rather than waiting for the next saddle-fitting appointment.
One honest caveat: shimming is a management tool, not a substitute for fit. If your saddle’s tree is the wrong width for your horse, no combination of shims will fix that. If the tree is close but the panels need reflocking, shimming buys you time but is not the permanent answer. Use it to manage a dynamic situation — a horse whose back is in transition — not to avoid addressing a foundational fit problem.
The Inserts: Do Not Buy the Pad Without Them
This is worth saying plainly because I have seen riders buy the Shimmable Half Pad without the inserts and then wonder why the saddle is still moving.
The Memory Foam Inserts / Gummy Inserts are sold separately, starting at $75. They are not included with the pad. The pad without the inserts is just a half pad with empty pockets — it has no corrective function until you put something in those pockets.
Ogilvy offers two insert types — memory foam and gummy — and the difference matters depending on what you are correcting. Memory foam compresses more readily and conforms to the horse’s back over time; it is the softer, more forgiving option and works well for horses who need a gradual lift or who are sensitive to pressure changes. Gummy inserts are firmer and provide a more defined correction — they hold their shape more consistently under saddle movement. For a horse whose saddle is actively migrating or for a more significant asymmetry correction, the gummy inserts tend to hold the correction more reliably.
If you are not sure which to start with, memory foam is the lower-risk choice. You can always move to gummy inserts if the correction is not holding under work.
Budget for both the pad and the inserts when you are planning the purchase. At $240 for the pad and $75 for inserts, you are looking at $315 minimum before the discount. With code SAMANTHABAER10, that comes down to $283.50 — still a real investment, but one that has a clear job to do and does it.
Ready to try the Ogilvy Shimmable Half Pad? Use code SAMANTHABAER10 for 10% off at Ogilvy Equestrian → https://ogilvyequestrian.com/samanthabaer
Quick Comparison: Shimmable vs. Standard Half Pad for the Fall Fit Problem
| Classic Jump Shimmable Half Pad | Classic Dressage Shimmable Half Pad | Classic Jump Memory Foam Half Pad | |
|---|---|---|---|
| Price | $240 | $240 | $125 |
| Shim pockets | Yes — front, rear, middle | Yes — front, rear, middle | No |
| Corrects saddle angle | Yes | Yes | No |
| Adds cushion | Yes | Yes | Yes |
| Best for | Saddle slipping, tilting, asymmetry | Same, under a dressage saddle | Even pressure distribution on a well-fitted saddle |
| Requires inserts | Yes (sold separately, from $75) | Yes (sold separately, from $75) | No |
| Fall back-change scenario | Lead pick | Lead pick | Not the right tool if the saddle is moving |
The Memory Foam Half Pad is a good pad. I am not dismissing it. But for a saddle that is actively migrating, it is the wrong tool. You need the geometry correction the Shimmable provides, not just the cushion. If your saddle fits properly and you are looking for comfort and pressure distribution on a stable back, the Memory Foam Half Pad at $125 is excellent value. If the saddle is moving, start with the Shimmable.
The Sheepskin Shimmable Option: Worth It for Some Horses
If your horse is sensitive across the back — reactive to the pad touching him, prone to tension through the loin when first saddled, or working through any kind of rehabilitation from back soreness — there is a premium version worth knowing about.
The Custom Jump Sheepskin Shimmable Half Pad at $319 and the Custom Dressage Sheepskin Shimmable Half Pad at $319 add a sheepskin contact surface to the same shim-pocket system. The sheepskin does two things: it wicks moisture more efficiently than the standard fabric, and it provides a softer, more conforming contact surface for horses who are particularly reactive at the first touch.
In fall, the back-sensitivity angle is relevant. Horses who have had their workload reduced over summer — and who are coming back into more structured work in cooler weather — sometimes present with back reactivity that is more about deconditioning than pain. The sheepskin surface can ease that transition by reducing the perceived pressure at the pad-to-horse contact layer while the shim pockets do the corrective work below.
At $79 more than the standard Shimmable, the Sheepskin Shimmable is not the first recommendation for every horse. If your horse is comfortable in work and the issue is purely mechanical — saddle migrating, not horse reactive — the standard Shimmable at $240 is the correct call. If sensitivity is part of the picture, the Sheepskin version earns the premium.
I have talked through how to assess whether pad sensitivity versus saddle-fit mechanics is driving a horse’s back reactivity on the podcast — it is worth a listen if you are trying to untangle which problem you are actually solving before you spend money on a solution.
How to Know If the Shimmable Half Pad Is Actually Working
After two or three rides with the shims in place, look for these indicators that the correction is doing its job:
The saddle stays put. This sounds obvious, but it is the primary test. If the saddle no longer drifts forward between the mounting block and the far end of the arena, the rear shims are creating the contact point the panel was missing.
Sweat patterns even out. Check the pad after you pull the saddle. If the horse was bridging or had a high-pressure point on one side, the sweat pattern will be uneven — dry where there was too much pressure and wet where contact was insufficient. A correctly shimmed pad should produce more even sweat distribution within a few rides.
The horse’s movement changes. A horse who has been subtly compensating for an ill-fitting saddle will often show more freedom through the shoulder and more willingness to step under once the saddle is sitting correctly. If you have a horse who has been short in front or reluctant to move out in fall and you cannot find a training explanation, the saddle fit is worth investigating before you conclude it is a fitness or conditioning problem.
The horse is less reactive at saddling. Horses who are uncomfortable under saddle frequently show anticipatory tension at girthing or when the pad is placed. If that tension decreases after shimming, you have both a performance confirmation and a welfare one.
If the saddle is still moving after two or three configuration adjustments, or if the sweat patterns remain significantly uneven, that is the signal to call a saddle fitter. Shimming can manage a back in transition; it cannot fix a tree that is wrong for the horse.
The Bottom Line: Fall Is When Fit Gets Away From You
The Ogilvy Shimmable Half Pad — specifically the Classic Jump Shimmable Half Pad at $240 or the Classic Dressage Shimmable Half Pad at $240, paired with Memory Foam or Gummy Inserts from $75 — is the most practical tool I know for managing the fit changes that fall brings without scheduling a saddle-fitter appointment every six weeks.
It does not replace a fitter. It does not fix a wrong-tree-width saddle. What it does is give you a responsive, adjustable system for a horse whose back is actively changing — which is most horses in September and October — so that you are not riding through a fit compromise for an entire season while you wait for the horse’s shape to stabilize.
Buy the pad. Buy the inserts at the same time. Budget for the code. And check the shim configuration again in four weeks, because the back that needs a rear-pocket correction in October will probably need a different configuration by December.
Ready to try the Ogilvy Shimmable Half Pad? Use code SAMANTHABAER10 for 10% off at Ogilvy Equestrian → https://ogilvyequestrian.com/samanthabaer
