ShuReNu

FS100 OTC Insole

Size: W3-4
Sizing guide

Size Conversion Chart

Fit note: Sizing can vary slightly by brand and style. If you’re between sizes, we usually recommend going up half a size.

Wide fit: Wide fit options are available in selected styles.

EU UK US (Men) US (Women)
36 3 — 5
37 4 — 6
38 5 — 7
39 6 7 8
40 6.5 7.5 8.5
41 7 8 9
42 8 9 10
43 9 10 11
44 9.5 10.5 11.5
45 10.5 11.5 12.5
46 11 12 13
47 12 13 14

Need help? Message us and we’ll recommend the best fit based on your foot width and support needs.

 

Find Your Perfect Fit (It’s Not Just Size)

Most people think they need a bigger size…
but in reality, they need a wider fit.

Understanding Shoe Widths

Width What It Means How It Feels
F Narrow Snug, slim fit
G Standard Comfortable for most
H Wide More room across the foot
K Extra Wide Maximum space & comfort

👉 Quick tip:
If your shoes feel tight at the sides—but long enough—you likely need a wider fit.

 

Size guide →
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Carbon fiber otc insole

Specialist Fit & Comfort Promise

Every product is selected or fitted to reduce stress on feet, knees, hips and back.

Trusted Quality Only

We only stock products we would confidently recommend to our own patients and families.

Quality You Can Trust

Produced in certified facilities with strict quality control for peace of mind.

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