All ages
Insoles & Sets
Replaceable insoles, a paper gauge for measuring at home, spare straps, cleaning, and three sets that cost less than their parts.
- Items
- 7
- Price
- $8–$248
- Sizes
- EU 18–38
- Allowance
- +12 mm

Why this line leaves 12 mm
Sets follow the allowance of the shoes inside them. Accessories carry no allowance of their own.
A shoe marked EU 28 in this line has 187 mm inside it, so it fits a foot of up to 175 mm. The same EU number in another line fits a different foot.
Soles in this line bend between 35° and 45° under hand pressure.
Choosing inside this line
Every pair here is the same length for the same EU number. What changes between them is the material, the closure, the width and how far the sole folds. Pick the length from the measurement, then pick the rest from the page.
Work out the size from a foot length
We describe how our shoes are made. We don't give advice about your child's feet. If you have concerns, ask a healthcare professional.
F-01Insoles & Sets
Growth Insole Pair
2 mm of adjustment, sold as a pair.
F-02Insoles & Sets
Foot Gauge
A printed paper gauge with a heel stop.
F-03Insoles & Sets
Spare Velcro Straps
Four replacement straps in two lengths.
F-04Insoles & Sets
Cleaning Kit Kids
Brush, cloth and a fragrance-free cleaner.
F-0545° flexInsoles & Sets
First Steps Set
First Flex, a pair of insoles and a gauge.
F-0635° flexInsoles & Sets
School Year Set
Two school shoes and a cleaning kit.
F-0740° flexInsoles & Sets
Full Season Set
The premium sneaker, sandal and boot, plus care.
All prices in US Dollars (USD).