Heel Notch: The Cutout That Aids Achilles Comfort

What is a heel notch?

The heel notch is a deliberate cutout at the top of the heel collar, the part of the sneaker that wraps around the back of your ankle. It typically forms a V shape or a smooth curve that dips lower than the rest of the collar. The notch aligns with the Achilles tendon, which runs from your calf muscles down to your heel bone.

This design feature is not just decorative. By removing material where the tendon sits, the sneaker avoids pressing against that sensitive area. When you walk, run, or point your toes, the tendon moves. A full collar can rub and irritate, while a notch lets the collar move out of the way.

• Shape: V-shaped or curved, often symmetrical on both shoes.
• Location: Centered at the back of the collar, at the top edge.
• Depth: Varies from a subtle dip to a pronounced cutout.
• Edge finish: Some notches are bound with fabric or leather to prevent fraying.

Why it helps your Achilles

The Achilles tendon is the largest tendon in the body, connecting the calf muscles to the heel bone. It endures high forces during activity. When a sneaker collar sits directly over the tendon, each step can cause friction, especially if the collar is stiff or the fit is tight. Over time, this can lead to redness, soreness, or even blisters.

A heel notch reduces direct contact. It creates a gap that lets the tendon move freely without rubbing against the collar. This is particularly beneficial for runners and walkers who have experienced posterior heel pain or Achilles tightness. Orthopedic resources like the American Academy of Orthopaedic Surgeons (AAOS) and its patient education site OrthoInfo emphasize the importance of comfortable footwear to prevent musculoskeletal issues.

The notch also promotes a more secure heel fit. By lowering the collar in the back, it can help the heel sit deeper into the shoe, which reduces heel slip. This works together with a properly shaped heel counter.

If you have a history of Achilles problems, a shoe with a well-designed heel notch can be a part of a broader strategy. Pair it with appropriate stretching and gradual activity progression. For guidance on finding the right sneaker, see our best running sneakers or best walking sneakers.

How to check a heel notch before buying

When trying on sneakers, look at the back of the collar. Place your finger on the top of the heel collar and slide it down toward the ankle. You should feel a dip or a cutout that aligns with your Achilles tendon. The notch should not be so sharp that it digs into your skin, nor so shallow that it still presses on the tendon.

Check the edges. They should be smooth and padded, without rough seams that could cause irritation. Some sneakers add extra cushioning around the notch to protect the ankle bone while keeping the tendon area open.

Consider the notch depth relative to your own anatomy. If you have a high-arched foot or a prominent Achilles insertion, you may need a deeper notch. If you have a lower heel, a shallower notch might be fine. Stand up and walk a few steps to feel if the collar moves with your foot.

The heel notch works alongside other features like the heel counter and collar padding. To understand those, read our guides on heel counter and collar padding. Also, check if the sneaker has a heel pull-tab, which can make the notch more accessible.

Who benefits most from a heel notch?

Anyone who has felt rubbing or discomfort at the back of the heel will likely appreciate a heel notch. It is especially useful for runners, who repeatedly flex the ankle and where even minor friction can become a distraction. Walkers and people who stand all day also benefit because the tendon is constantly moving.

If you have had Achilles tendinitis, a heel notch can be a preventive measure. It reduces direct pressure on the tendon, which may lower the risk of flare-ups. However, a notch alone is not a treatment; it is a comfort feature. For chronic pain, consult a medical professional.

Occupational health research, such as that from NIOSH, highlights the importance of comfortable footwear for workers on their feet. While NIOSH focuses on workplace safety, choosing shoes with features like a heel notch can support long-day comfort.

For different activities, the ideal notch might vary. Running shoes often have a pronounced notch, while casual sneakers may be subtler. Look at our guides for best everyday sneakers and best walking shoes to see how brands incorporate this feature.

Common variations of the heel notch

Not all heel notches are the same. Some are deep and angled, others are a gentle curve. The depth and shape affect how much pressure is relieved.

Deep V-shaped notches are often found in performance running shoes. They allow the collar to open up when the ankle flexes, so the tendon stays clear. Curved notches are softer and may be more comfortable for everyday wear.

Some sneakers combine the notch with an Achilles "grip" or a small flexible piece that cradles the tendon. That design can provide a sense of security while still avoiding friction. Other shoes have a padded collar that surrounds the notch, offering support to the ankle without impinging.

A heel notch is not always present. Some minimalist or lifestyle sneakers may have a straight collar. If you specifically want this feature, check product photos or the manufacturer's description. When in doubt, try the sneaker and feel for the dip.

How the heel notch relates to overall fit

The heel notch is one part of a well-fitting sneaker. It works with the heel counter, collar padding, and lacing system to keep your foot secure. A good heel notch helps your heel sit lock in place, reducing the chance of slippage.

If you experience heel slip, a notch alone won't fix it. You may need to use a lacing technique that locks the heel, like the runner's loop. Our article on heel slip prevention explains how to test and adjust.

Also consider the collar height. A higher collar, like in high-top sneakers, may have a notch or may not. High-top designs often wrap around the ankle, and a notch there can help with Achilles comfort. Read more about high-top vs low-top to decide what works for you.

Remember, the heel notch is a comfort detail, not a performance spec. It's one of many factors to weigh when choosing a sneaker. Always prioritize overall fit, support, and the activity you plan to do.

What to pick for your use

Questions

Does every sneaker have a heel notch?

No. Many performance and casual sneakers include one, but some minimalist or dress styles use a straight collar. It's not a universal feature, and its depth varies by model.

Can a heel notch prevent Achilles tendinitis?

It can reduce friction and pressure on the tendon, which may lower the risk of irritation, but it does not prevent or cure tendinitis. Proper footwear, stretching, and gradual training are key.

Is a deeper heel notch always better?

Not necessarily. A very deep notch can reduce support behind the heel. The ideal depth matches your anatomy and the activity. A moderate notch is often best for everyday wear.

Can I add a heel notch to sneakers that don't have one?

You could cut the collar, but it would damage the shoe and likely void any warranty. Better to choose a sneaker with a factory-designed notch.

How do I know if the heel notch fits correctly?

When you wear the shoe, the notch should align with your Achilles tendon. You should not feel the collar pressing into that area when you flex your foot. The edges should feel smooth.

Does a heel notch affect heel slip?

Yes, it can help. By lowering the collar at the back, the notch can encourage your heel to sit deeper, reducing upward slippage. But other factors like lacing play a bigger role.