Official Sea Monkey rash guard
Size guide
| HEIGHT | CHEST | WAIST | |
| 2T (inches) | 36 ¼ | 20 ½ | 20 ⅛ |
| 3T (inches) | 38 ⅝ | 21 ¼ | 20 ⅝ |
| 4T (inches) | 41 | 22 | 21 ¼ |
| 5T (inches) | 43 ¼ | 22 ⅞ | 21 ⅝ |
| 6 (inches) | 45 ⅝ | 23 ⅝ | 22 |
| 6X (inches) | 48 | 24 ¾ | 22 ½ |
| 7 (inches) | 50 ⅜ | 26 | 22 ⅞ |