🧾 Size Guide 

1. Choose by inner length (inches)

At Nube Kids, each model is listed by its actual inner length in inches.
This avoids confusion with traditional US sizes (like 6, 7, etc.), since different models may have different measurements even if the size number is the same.

You only need to measure your child’s foot and choose the corresponding inner length in inches.

Remember: the foot should be between 0.3 in and 0.5 in shorter than the inner length of the shoe you select.

Example: if the foot measures 5.2 in (13.2 cm), the ideal shoe would have an inner length of 5.5–5.7 in (14–14.4 cm).

📌 You’ll find the available lengths listed in each product page.

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2. Recommended fit margin

✅ Perfect fit at purchase: the foot should be 0.3–0.5 in (0.8–1.2 cm) shorter than the shoe’s inner length.
⚠️ Time to size up: when the remaining space is less than 0.2 in (0.4 cm).
❌ Too big: if there's more than 0.6 in (1.5 cm) of extra space, the shoe will feel too loose.

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3. How to measure your child’s foot 👣

1️⃣ Place a sheet of paper on the floor, flush against a wall.
2️⃣ Have your child stand on it barefoot, with their heel touching the wall.
3️⃣ Mark where the longest toe ends. ✏️
4️⃣ Measure the distance from the wall to the mark using a ruler. 📏
5️⃣ Repeat with the other foot and always use the longer measurement. ✅