| Boys | Height (cm) | Weight (kg) | Chest (cm) | KoreaSize (height-chest) |
|---|---|---|---|---|
| 5/6 | 110-122 | 19-26 | 58-64 | 120-61 |
| 7/8 | 122-135 | 24-31 | 64-69 | 130-67 |
| 9/10 | 135-145 | 29-36 | 69-72 | 140-70 |
| 11/12 | 145-152 | 33-41 | 72-76 | 150-73 |
| 13/14 | 152-160 | 37-46 | 76-80 | 155-76 |
| 15/16 | 160-165 | 42-51 | 80-84 | 160-80 |
| 17/18 | 160-165 | 46-57 | 84-89 | 160-84 |