
Insoles Sizing Guide

| EU Size | 1. Heel width | 2. Ball-of-foot width | 3. Heel-to-toe length | 4. Arch support width | 5. Arch support length |
| 36-37 | 5.6 cm | 8.8 cm | 24.3 cm | 6.6 cm | 14.4 cm |
| 38-38.5 | 5.9 cm | 9.0 cm | 25.2 cm | 6.9 cm | 15.0 cm |
| 39-39.5 | 6.1 cm | 9.3 cm | 26.0 cm | 7.1 cm | 15.6 cm |
| 40-41 | 6.3 cm | 9.5 cm | 26.8 cm | 7.2 cm | 16.1 cm |
| 41.5-42 | 6.4 cm | 9.7 cm | 27.7 cm | 7.4 cm | 16.7 cm |
| 42.5-43.5 | 6.5 cm | 10.0 cm | 28.6 cm | 7.6 cm | 17.2 cm |
| 44-44.5 | 6.6 cm | 10.2 cm | 29.5 cm | 7.7 cm | 17.7 cm |
| 45-46 | 6.8 cm | 10.5 cm | 30.5 cm | 7.9 cm | 18.3 cm |
| 46.5-47 | 8.8 cm | 11.5 cm | 31.0 cm | 8.2 cm | 19.1 cm |
What is my Arch Height?
Finding your arch height is as easy as looking at your wet footprint. See how it's done.
| Is your footprint between arch heights? Start with the lower arch and see how it feels. Free exchanges make it risk-free to try them out. |
| What Does Your Wet Footprint Look Like? | Describe Your Arch | Your Best Tread Labs Insole Height |
|---|---|---|
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My arch is flat when I stand or sit. | Low |
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My arch is flat when I stand but appears when I sit. | Medium |
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My arch is close to but doesn't touch the ground. | Medium |
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My arch is high off the ground when I stand. | High |
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My mid-foot barely touches the ground, if at all. Sometimes, my footprint is two pieces. |
Extra high |
Wet Foot Test
Quickly and easily find your arch height with this simple test.

What's my Arch Height?
You can easily determine your arch height in 4 steps. See the steps below.
To determine the correct arch height, you will need three things:
- Water
- Cardboard or paper
- Shower or tub
Step 1: Wet the bottom of your foot thoroughly in the shower or bath.
Step 2: Stand on the cardboard or paper.
Step 3: Step off gently.
Step 4: Compare the footprint with the images below.
Is your footprint between arch heights? Start with the lower arch and see how it feels.
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Low
My arch is flat when I stand or sit.
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Medium
My arch is close to but doesn't touch the ground.
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High
My arch is high off the ground when I stand.
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Extra High
My mid-foot barely touches the ground, if at all. Sometimes, my footprint is two pieces.
Wet Foot Test
What Makes Tread Labs Insoles Better
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One size does not fit all.
Dash Insoles come in four arch heights – low, medium, high, or extra high – so you can get the perfect fit for your feet.
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Like new, on demand.
Tread Labs insoles are made with a 2-part system: an arch support and a replaceable top cover. Easily replace the top cover to make your insoles like new again.
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Guaranteed to last.
Our molded arch supports are built to last a million miles. If they ever break or lose their shape, we'll send you a new pair. No questions asked.

The Support of Custom Orthotics, Simplified.
We support all 26 bones and 33 joints in the human foot with our 26-33 ARCHitecture—the technology behind our semi-custom orthotics. With 4 arch heights to choose from, you get personalized support without the hassle or cost of custom orthotics.
Perfect for Boosting Athletic Performance
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"Nice support for sports"
⭐⭐⭐⭐⭐
"Have been using these for pickleball and adds some nice stability and firm support. Keeps feet from getting as sore afterwards! I have tried the Pace also but enjoy these more on a hardcourt when running around like the Tasmanian devil...great for sports."
- Kurt D, Verified Buyer
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"Great for this post surgical athlete. Cycling, running, walking, lifting.
⭐⭐⭐⭐⭐
"I’ve spent multiple thousands on insoles before and after having an FDL transfer in my foot due to a PTTD. Initially after surgery using plastizote in my shoes for support was nice but as I regained strength with PT, these insoles are the ideal."
- Joseph B, Verified Buyer
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Flat Feet/ Fallen Arches
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"Used as a replacement for upstep custom inserts. The dash actually provided more support on gait analysis while being more minimal in the shoe and more comfortable. The modular nature with replacement top covers is a major value. Fit perfectly out of the box with no trimming. "
- Jason V, Verified Buyer
Compare with Other Insoles
Our insoles are available in 3 levels of support so you can customize to your needs.



