Before you choose

Size Guide

Use height and age to find a suitable size. Current measurements are approximate.

Kids sizing

Sizes are based on height and approximate weight — if he's between two sizes, always pick the larger.

Size	Approx. age	Height (cm)	Approx. weight (kg)
2-3	2–3 years	92 – 98	13 – 15
4-5	4–5 years	104 – 110	16 – 18
6-7	6–7 years	116 – 122	20 – 23
8-9	8–9 years	128 – 134	25 – 29
10-11	10–11 years	140 – 146	31 – 36
12-13	12–13 years	152 – 158	38 – 45

Baby sizing

For babies, weight is often a more accurate guide than age — growth rates vary a lot in the first two years.

Size	Approx. age	Height (cm)	Approx. weight (kg)
0-3	Newborn–3 months	50 – 62	3 – 6
3-6	3–6 months	62 – 68	6 – 8
6-9	6–9 months	68 – 74	8 – 9.5
9-12	9–12 months	74 – 80	9.5 – 11
12-18	12–18 months	80 – 86	11 – 12.5
18-24	18–24 months	86 – 92	12.5 – 14

How to measure your child

Height Stand your child straight against a wall, mark the top of their head, and measure from the floor to the mark.

Waist circumference Wrap a tape measure around the narrowest point of your child's waist, without pulling tight.

Compare to the chart Use height as your main reference, and if it falls between two sizes, pick the larger for room to move.

Quick tips

Choose a size using measurements, rather than fabric type alone.
If he's between sizes and growing fast, pick the larger one so it lasts longer.
Fit can vary by cut and fabric; check your child’s measurements before choosing.

These measurements are estimates based on common children’s clothing sizes, pending confirmation against JOLLY’s exact measurements. Our support team can help you choose before shipping.

Size Guide

Kids sizing

How to measure your child

Quick tips

Still not sure?