The only saddle pad endorsed by back surgeons, master saddlers and veterinarians.

English Trim-to-Fit Saddle Fitting Shims (Pair)

English Trim-to-Fit Saddle Fitting Shims (Pair)


Saddle fitting shims proven to increase equine comfort.


If you are not in the USA, please click on your region flag to place an order.


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*This product is our trim-to-fit shims, saddle pad not included.

English Trim-to-Fit Saddle Fitting Shims

Made of the same shock-absorbing, comfort foam found on our saddle pads.

In addition to creating the perfect saddle fit it also protects your horse’s back and improves comfort for horses and riders.

Saddle Shim Post

Please note:

If you are purchasing saddle fit shims for a pad purchased before the fall of 2019, please contact us directly to order. This shim shape will not fit older pads. You can call our office M-F 9am-5pm 888-401-9101 eastern time or email us at

These English Trim to Fit saddle fitting shims are available in two thicknesses

ThinLine Plus+ is 1/4″ (6.4mm) thick.

ThinLine is 3/16″ is (4.8mm) thin.

No Expiration Date!

Unlike closed-cell foam and wool, ThinLine never compresses or deteriorates. The English saddle shims you buy today will last you a lifetime!

Our Trim to Fit Saddle Fitting shims are sold in pairs and offer guidelines for easy trimming

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It only takes a simple pair of scissors or box blade to trim to fit. Shims come with scoring marks as a guide for you to create Front, bridging or rear saddle fit shims. The trim to fit full shim is the most economical way to always have what you need for every horse. If you only need to shim in one area, cut them to lay exactly where you need them in the open pocket of a ThinLine pad. The remainder can be used to add additional height by stacking several trimmed pieces on top of each other. As your horse grows and changes you now have several sets of shims for fine-tuning saddle fit. Or, boost your overall ThinLine protection and comfort by using the full shim. The most cost-effective and versatile way to shim your pad!

Photo below shows the shims that can be created from a pair of Trim To Fit shims.


English Saddle Fitting Shims

Carefully designed with the help of Master Saddlers ensures you will never have a pressure point. Our exclusive foam makes saddles fit better, and horses more comfortable all in one easy step.

Inserts stay put without shifting and you may stack them. We do not divide the pocket, allowing you or your saddle fitter to place the inserts precisely where your horse needs it.

If you find you no longer need inserts, just remove them and keep all the great benefits of your ThinLine Pad!

We have a list of saddle fitters on our dealer page if you would like to consult with a specialist.

Colors: ThinLinePlus+ (1/4″) shims are available in black only. ThinLine (3/16″) shims may arrive in black, brown or white. And, Since the saddle shims cannot be seen inside your pad, so the color is not an issue.


Bridging Shims for Swayback – If your saddle is bridging, you are missing contact in the middle of the horse’s back and there is too much contact at both the wither and the cantle. When using bridging shims, we recommend you start slowly. Use only one or two at a time. You will discover your horse will begin to lift their top line and develop more muscle with ThinLine. The result of muscle development means it is often possible to remove one or all of the saddle shims. Good news: you keep your ThinLine pad and horses continue to use their backs correctly.

*The shape of your shims may differ from those pictured.


Check out our English horse tack range and western saddle pad tack range.

Also see these similar products:

Additional information

Weight .75 lbs
Dimensions 12 × 10 × 1 in
English Shim Pad

Contender II BOT Dressage SQ #8020-Onesize, Contender II BOT Jumping SQ #8021-Onesize, Cotton Quilted Fitted AP Pad #7057-Onesize, Cotton Quilted Fitted Dressage Pad #7054-Onesize, Cotton Quilted SQ Dressage Pad #7055-Onesize, Cotton Quilted SQ Jumping Pad #7056-Onesize, Cotton Trifecta 1/2 Pad #7306-Large, Cotton Trifecta 1/2 Pad #7306-Medium, Cotton Trifecta 1/2 Pad #7306-Small, Cotton Trifecta 1/2 Pad w/sheepskin rolls #7416-Large, Cotton Trifecta 1/2 Pad w/sheepskin rolls #7416-Medium, Cotton Trifecta 1/2 Pad w/sheepskin rolls #7416-Small, English wither free pad-Cotton-Cutback #7058-Onesize, Full Sheepskin Trifecta 1/2 Pad #7024-Large, Full Sheepskin Trifecta 1/2 Pad #7024-Medium, Full Sheepskin Trifecta 1/2 Pad #7024-Small, Woven Wool Dressage SQ #3340-Onesize

Shim Thickness

Trim to Fit Shim ThinLine (3/16) 4.8mm, Trim to Fit Shim ThinLine+(1/4) 6.4mm

Selecting Shims

All shimmable pads begin with ThinLine (3/16″, the thinnest we make) over a base pad. Each saddle pad has a pocket beneath the ThineLine to place optional shims for fine tuning saddle fit.

The only pads without the ability to shim, are our pads made entirely out of the ThinLine foam called Basic Pads.

We offer two different shim thickness choices – ThinLine,&ThinLine+Plus.

  • Saddle Fitting Shims are available in the two thickness of ThinLine foam-ThinLine and ThinLine+Plus, to adjust (lift) the saddle in one of three areas; front, bridging, cantle (rear lift).
  • – Each pad has a custom designed shim for a perfect fit, so be sure to select the correct pad when ordering your shims.

How to Buy Outside the USA

ThinLine is readily available in most countries. This site ships to the USA, Mexico, and South America.

We hope you will use the following links to our authorized distributors in the following regions. Here you will find all the great products and support you need:

Europe and the UK:




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    how do I decide between thin line shim pad or thicker thin line plus?
  1. Q how do I decide between thin line shim pad or thicker thin line plus? answer now

    Thank you for your question! You can find info about choosing your ThinLine thickness in our blog section or by clicking here.

  2. Are the trim to fit shims sold as pairs or individually?
  3. Q Are the trim to fit shims sold as pairs or individually? answer now
    A Thank you for your question! The Trim to Fit shims are sold in pairs.
    A Sold as pairs. One for the near side, one for the off side.
    A Is the price of $70 include all the pieces shown above ? I tried to select the front , but was not able to buy just the front

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