| Size | Age | Height (cm) | Weight (kg) | Chest (cm) |
|---|---|---|---|---|
| 0-3M | 0–3 months | 50–62 | 3–6 | 40–43 |
| 3-6M | 3–6 months | 62–68 | 6–8 | 43–45 |
| 6-12M | 6–12 months | 68–80 | 8–10 | 45–48 |
| 12-18M | 12–18 months | 80–86 | 10–11.5 | 48–50 |
| 18-24M | 18–24 months | 86–92 | 11.5–13 | 50–52 |
| 2-3Y | 2–3 years | 92–98 | 13–15 | 52–54 |
| 3-4Y | 3–4 years | 98–104 | 15–17 | 54–56 |
How to measure
- Height: lay your baby flat and measure from the top of the head to the heel.
- Chest: measure around the fullest part of the chest, under the arms.
- Weight: use the most recent weight from your paediatrician.
Fit tips
- Between sizes? Size up — our cotton is pre-washed but babies grow quickly.
- Sleepsuits are cut with extra room in the seat for cloth or disposable nappies.
- Caps, bibs and swaddles are Free Size and suit most babies from birth to 18 months.