Tops
| Onzie Size | S | M | L |
| Age | 4 - 6 | 7 - 10 | 12 - 16 |
Bottoms
| Onzie Size | 4 - 5 | 6 - 6x | 7 - 8 | 10 - 12 | 14 -16 |
| Age | 4 - 5 | 6 | 7 - 8 | 10 - 12 | 14 - 16 |
| Onzie Size | S | M | L |
| Age | 4 - 6 | 7 - 10 | 12 - 16 |
| Onzie Size | 4 - 5 | 6 - 6x | 7 - 8 | 10 - 12 | 14 -16 |
| Age | 4 - 5 | 6 | 7 - 8 | 10 - 12 | 14 - 16 |