Our Sizing Guides
Measure your child and match their numbers to the chart below. Chest is the most important measurement for wetsuit fit — use height and weight as a cross-check.
| Size | Age | Height (cm) | Chest (cm) | Weight (kg) |
|---|---|---|---|---|
| 1 | 1-2 | 80-90 | 48-52 | 10-13 |
| 2/3 | 2-3 | 88-98 | 52-54 | 12-15 |
| 4/5 | 4-5 | 98-108 | 54-57 | 15-18 |
| 6/7 | 6-7 | 108-118 | 57-61 | 18-23 |
| 8/9 | 8-9 | 118-128 | 61-66 | 23-30 |
| 10/11 | 10-11 | 128-140 | 66-72 | 30-38 |
| 12/13 | 11-12 | 140-152 | 72-78 | 38-46 |
Between sizes? Go up. Prioritise the chest measurement — it matters most for warmth — and remember a slightly roomy suit is far more use next summer than a snug one.
How to measure:
- Height — stand them barefoot against a wall and measure from the floor to the top of their head.
- Chest — measure around the widest part of their chest, under the arms, with the tape snug but not tight.
- Weight — use their current weight as a cross-check.
Shopping for yourself? See the women's size guide.
Still deciding? Email their height and chest measurement to hello@avaly.au and we'll tell you which size to order. It's faster than a return, and we'd rather get it right the first time.