Size guide
Find their size
Six sizes from newborn to 5 years. Start with their age, then check their height for the best fit.
- Sizes for 0–5 years
- Between two sizes? Choose the bigger one
- Free 14-day returns if it doesn't fit
Size chart
Ages are a guide. Height gives the best fit.
- 0–6 months 56–66 cm 70
- 6–9 months 66–70 cm 80
- 9–18 months 70–80 cm 90
- 1½–2½ years 80–90 cm 100
- 2½–3½ years 90–100 cm 110
- 3½–5 years 100–110 cm 120
The label size is the number on the tag inside the onesie.
Not sure? Slide to their height
We'll suggest the size that fits now, with a little room to grow.
How to measure
Three steps, one minute
- 1
Stand them barefoot against a wall, heels touching it. For little babies, lay them on a flat surface.
- 2
Rest a book flat on the top of their head and mark where it touches the wall.
- 3
Measure from the floor to the mark in centimetres, then find that height in the chart.
Found their size? The Turtle is ready when they are.
See the Turtle