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US Size Range | EU Size Range | Foot Length (inches) | Foot Length (cm) |
---|---|---|---|
M/ 4–5.5 W/ 5–6.5 | 36–38 | 8.5 – 9.0 | 21.6–23.0 |
M/ 6–7.5 W/ 7–8.5 | 39–41 | 9.25–9.75 | 23.5–24.8 |
M/ 8–9.5 W/ 9–10.5 | 42–44 | 9.875–10.25 | 25.1–26.0 |
M/ 10–11 W/ 11–12 | 45–46 | 10.5–10.9 | 26.7–27.6 |
For half sizes or wider feet, select the larger option. Insoles can be trimmed to your exact fit.

4D Cloud Tech
Advanced cushioning system that stays fresh, breathable, and supportive — unlike worn-out insoles that go flat

Elastic Shape Retention
Snaps back instantly — won’t flatten or lose support over time.

Cloud Cushioning
Ultra-soft comfort that compresses under pressure, then rebounds for lasting support.
Frequently Asked Questions
What size should I order?
What size should I order?
Our insoles are listed in US Men’s and Women’s sizes, with an EU size and foot length chart included for accuracy. If you are between sizes, we recommend choosing the larger size — the insoles can be trimmed slightly at the toe area for a perfect fit.
How long does shipping take?
How long does shipping take?
All orders are processed within 1–3 business days. Delivery usually takes 6–9 business days depending on your location. You’ll receive a tracking number by email as soon as your order ships so you can monitor your package in real time.
How long do the insoles last?
How long do the insoles last?
Our NepheléSoles™ are made with Poron® performance foam, which is far more durable than standard foam insoles. With regular daily use, they typically last 6–12 months without flattening, depending on your activity level. For the best comfort and support, we recommend replacing them once you notice significant wear.
What if the insoles don’t work for me?
What if the insoles don’t work for me?
We want you to feel confident shopping with us. If your insoles arrive damaged, defective, or incorrect, contact us within 7 days and we’ll arrange a replacement or refund. For hygienic reasons, used insoles cannot be returned unless they’re faulty.