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Every See Kai Run shoe is proportionally engineered to match the unique shape of a child's foot, promoting healthy deveopment with each step. Find their size with our printable guide!

step 1

Download and Print

Download the guide. Please be sure to print at 100% scale to ensure your measurements are correct.

step 2

Prep Your Materials

Fold at the dotted line and set against a wall or a hard surface. The fold should be at a 90-degree angle.

step 3

Measure Those Feet

Place your kid's heel against the fold. Mark the end of the longest toe to determine their size.

Don't Have Access to a Printer?

Using a paper and ruler, have your child stand with their heels against a wall. Make a mark in front of the longest toe and the back of the heel. Use the ruler to measure the distance between the two marks. If your child intends to wear socks, measure with the socks on. Use the chart below to find their size.

Sizing Chart

This chart has accommodated for growing room. If the foot measurement lands in between sizes, order a size up.

CM
IN
Your See Kai Run Size
10.5cm
4 1/8″
3
10.9cm
4 3/8″
3.5
11.3cm
4 1/2″
4
11.7cm
4 5/8″
4.5
12.1cm
4 3/4″
5
12.5cm
5″
5.5
12.9cm
5 1/8″
6
12.1cm
4 3/4″
5
12.9cm
5 1/8″
6
13.8cm
5 1/2″
7
14.6cm
5 3/4″
8
15.5cm
6 1/8″
9
15.8cm
6 1/4″
9.5
16.2cm
6 3/8″
10
16.6cm
6 1/2″
10.5
17.1cm
6 3/4″
11
17.5cm
6 7/8″
11.5
17.9cm
7″
12
18.3cm
7 1/4″
12.5
18.7cm
7 3/8″
13
19.1cm
7 1/2″
13.5
19.6cm
7 3/4″
1Y
20cm
7 7/8″
1.5Y
20.4cm
8″
2Y
20.9cm
8 1/4″
2.5Y
21.3cm
8 3/8″
3Y
21.7cm
8 1/2″
3.5Y

Ages and Stages

A child's foot is different than an adult's foot; it's constantly growing and changing. That is why we study children's feet and carefully consider every detail that goes into a shoe.

First Walkers

9–18 Months | Sizes: 3–6

Crawling and First Steps


How their feet are changing:

Cartilage in foot begins to harden into bones

Toddlers

18 Months–3 Years | Sizes: 5–9

Walking Unassisted


How their feet are changing:

Bones form together and fatty pads minimize

Preschool

3–5+ Years | Sizes: 9.5–13.5

Walking, Running, Highly Mobile


How their feet are changing:

Bones fuse, fat tissue disappears, and the arch begins to form

Youth

5+ Years | Sizes: 1Y–3Y

Highly Mobile, Stable Balance


How their feet are changing:

The arch is developed and visible and balance is more stable

Sizing FAQs