Using Orthotics in Sneakers: What to Check First

Why sneaker fit matters for orthotics

Orthotics work best when they sit on a stable, supportive base. The sneaker provides that base. If the shoe is too tight, too shallow, or too flexible, your orthotic may shift, cause pressure points, or simply not deliver the support you need. Checking a few structural features before you buy can save you from discomfort later.

The American Academy of Orthopaedic Surgeons (AAOS) emphasizes proper footwear for maintaining foot health and preventing problems. While a sneaker cannot replace a custom orthotic, choosing a design that accommodates your insert makes the orthotic more effective. Similarly, the patient education resources at OrthoInfo and the occupational safety guidance from NIOSH all point to well-chosen shoes as a foundation for foot and body health.

Check 1: The insole must be removable

The first and most important check is whether the insole comes out. Some sneakers have glued or stitched insoles that cannot be removed. If the insole is fixed, you cannot place your orthotic directly on the midsole, which adds height and may cause your foot to sit too high in the shoe.

Look for a sneaker where the factory insole is easy to lift out. Once removed, the orthotic should fit flat against the midsole without overlapping the edges. You also need to account for the thickness of your orthotic relative to the original insole. A thinner orthotic may need a little extra cushioning, while a thicker one may use up too much volume. Our guide to removable insoles explains the difference, and how to remove insoles offers practical tips for checking this feature.

Check 2: Internal volume for your orthotic

Orthotics add bulk inside the shoe, so the sneaker must have enough internal volume. This means both width and height. A narrow shoe will squeeze your foot and the orthotic, while a shallow toe box can press on your toes. Look for sneakers with a roomy toe box and a wider fit if you need extra space.

Width is not the same as length. Many sneakers come in wide options, which provide extra internal space without changing your size. Toe-box height also matters: a higher toe box lets your toes sit naturally without being compressed by the roof of the shoe. If your orthotic has a deep heel cup, you will also need extra depth in the rearfoot. For more details, see our articles on toe box height and shoe width explained. You can also browse wide fit sneakers if your orthotic needs more room.

Check 3: Heel depth and support

The heel area of the sneaker must be deep enough to hold both your heel and the orthotic's heel cup. A shallow heel counter will allow your heel to slip, which can cause blisters and make the orthotic shift. Look for a sneaker with a firm, structured heel counter that wraps around your heel.

When you insert the orthotic, check that your heel sits snugly in the deepest part of the shoe. There should be no gap at the back, but also no pressure. The heel collar should not cut into your Achilles tendon. If the sneaker has a pull tab, it is a sign that the heel is designed to be easy to get into, which can help with a secure fit. Learn more in our heel counter guide and the heel slip test.

Other features that help orthotic fit

Beyond the three main checks, a few other design features can make a sneaker more orthotic-friendly. Lace-up systems that allow independent tightening across the midfoot let you adjust pressure where the orthotic adds volume. A firm midsole provides a stable platform, while a softer one may let the orthotic sink unevenly.

The upper material also matters. A stretchy knit upper adapts to the shape of your foot and orthotic, while a stiff leather upper may resist. Look for a midsole with a relatively flat, wide base that does not have aggressive arch molding, because that may conflict with your orthotic's own arch support. Neutral sneakers often work best with custom orthotics. Our lacing techniques and neutral vs stability shoes guides cover these points in depth.

How to test the fit with your orthotic

The best way to know if a sneaker works with your orthotic is to try it on with the orthotic inside. Bring your orthotic to the store, remove the factory insole, and insert your orthotic. Then lace the sneaker and walk around. There should be no pinching, sliding, or pressure points.

Check that you can wiggle your toes and that your heel stays locked in place. You should have about a thumb's width of space between your longest toe and the front of the shoe. Also, notice if the orthotic causes the shoe to feel too tight across the top. If it does, the internal volume may be insufficient, and you should look for a deeper or wider model. Our guide on how sneakers should fit offers a complete checklist, and the heel slip test helps confirm a secure heel.

What to pick for your use

Questions

Can I use any sneaker with orthotics?

No. The sneaker must have a removable insole, enough internal volume, and a deep heel. If any of these are missing, the orthotic may not sit correctly or may cause discomfort.

What if the sneaker has a non-removable insole?

In that case, you cannot place the orthotic directly on the midsole. Stacking a second insole on top of a fixed one usually makes the shoe too tight and can distort the orthotic. Look for a different model.

How much extra space do I need for an orthotic?

There is no standard number because orthotics vary in thickness and shape. The best approach is to try the sneaker with your orthotic inside and check that your toes can wiggle and your heel does not slip.

Do I need a wide size for orthotics?

Not always, but a wider fit provides more internal volume, which is often helpful. If your foot is average width and the orthotic is thin, a regular width may work if the toe box is deep enough.

Should I always remove the original insole?

Yes, if it is removable. Placing an orthotic on top of the original insole usually raises your foot too high and narrows the available space, which can cause blisters and instability.