Onesie swim bundle sizes
Each bundle has a onesie, a swim hat and a wet bag. The onesie size sets the hat size.
| Age | Size on tag | Front lengthGarment (cm) | Front lengthGarment (in) | ½ waistGarment, laid flat (cm) | ½ waistGarment, laid flat (in) | SleeveGarment (cm) | SleeveGarment (in) |
|---|---|---|---|---|---|---|---|
| 6–12 months | 1 | 33 | 13.0 | 24 | 9.4 | 35 | 13.8 |
| 1–2 years | 2 | 38 | 15.0 | 24 | 9.4 | 37 | 14.6 |
| 2–3 years | 3 | 46 | 18.1 | 28 | 11.0 | 41 | 16.1 |
| 3–5 years | 4 | 50 | 19.7 | 30 | 11.8 | 45 | 17.7 |
What comes in each bundle
| Onesie size | Swim hat | Fits headcircumference | Brim width |
|---|---|---|---|
| 1 6–12 months | XS–S | 44–48 cm | 5 |
| 2 1–2 years | M | 48–52 cm | 5 |
| 3 2–3 years | L–XL | 52–56 cm | 5 |
| 4 3–5 years | L–XL | 52–56 cm | 5 |
Wet bag: one size, 30 × 30 × 5 cm.
How to measure
- Lay a onesie or rashie that fits them now flat on a table.
- Front length: from the top of the zip or neckline to the bottom of the crotch.
- ½ waist: straight across the waist, side to side, laid flat.
- Sleeve: from the shoulder seam to the end of the cuff.
- Pick the size closest to (or just over) your measurements.
Fit tips
- Sizing runs on the smaller side. If in doubt, size up.
- These are measurements of the onesie itself, so compare them with something that fits.
- The site shows age; the tag inside shows the size number.
Still not sure? Ask our team and we'll help you pick a size.