Under Armour Youth Size Chart
| GIRLS | US SIZES | CHEST (in) | WAIST (in) | HEIGHT (in) |
|---|---|---|---|---|
| YSM | 7-8 | 26-27 | 23½-24½ | 50½-52½ |
| YMD | 10-12 | 28½-30 | 25-26 | 55-58 |
| YLG | 14-16 | 31½-33½ | 28-30 | 61-62½ |
| YXL | 18-20 | 35½-37½ | 32-34 | 62½ |
| Boys | US SIZES | CHEST (in) | WAIST (in) | HEIGHT (in) |
|---|---|---|---|---|
| YSM | 7-8 | 25½-26½ | 23½-24½ | 49½-52 |
| YMD | 10-12 | 27½-28½ | 25½-26½ | 55½-58½ |
| YLG | 14-16 | 30½-32 | 28-29½ | 61½-64 |
| YXL | 18-20 | 33½-35 | 31-32½ | 66½-69 |