O'Neills Baby/Toddler/Youth Jerseys Size Guide

 Size

 Chest (inches) Chest (cm)
0-6 months 22-23 57-59.5
6-12 months 23-24 59-61.5
1-2 24-25 61-63.5
3-4 26-27 67-69.5
5-6 29-30 73-75.5
7-8 31-32 79-81.5
9-10 34-35 85-87.5
10-11 36-37 91-93.5
11-12 38-39 96-98.5
13 40-41 101-103.5