O'Neills Adult Size Guide

Size Chest (Inches) Waist (Inches)
XS 42 30
S 44 32
M 46 34
L 47 36
XL 48 38
2XL 50 40
3XL 52 42
4XL 54 44
5XL 56 46
6XL 58 -
7XL 60 -

O'Neills Womens Size Guide

UK Size Chest (Inches)
8 38
10 40
12 42
14 44
16 46
18 48
20 50
22 52

O'Neills Junior Size Guide

Age Chest (Inches) Waist (Inches)
5-6 Years 28 20
7-8 Years 30 22
9-10 Years 34 24
10-11 Years 36 26
13-14 Years 38 28
Please note sizes listed are a guided average