Optimum Manufacturer's Sizing
Top Sizes
| Size |
Chest (inches) |
| 4XS |
28 / 30 inch |
| 3XS |
30 / 32 inch |
| 2XS |
32 / 34 inch |
| XS |
34 / 36 inch |
| S |
36 / 38 inch |
| M |
38 / 40 inch |
| L |
42 / 44 inch |
| XL |
46 / 48 inch |
| 2XL |
50 / 52 inch |
| 3XL |
54 / 56 inch |
Pant Sizes
| Size |
Waist |
| 4XS |
24 / 26 inch |
| 3XS |
26 / 28 inch |
| 2XS |
28 / 30 inch |
| XS |
30 / 32 inch |
| S |
32 inch |
| M |
34 inch |
| L |
36 inch |
| XL |
38 inch |
| 2XL |
40 inch |
| 3XL |
42 inch |
Head Protection Sizes
| Size |
Inches |
cm |
| Small Boys |
20.5 |
52.5 |
| Large Boys |
21.5 |
55 |
| Small |
22.5 |
57 |
| M |
23.5 |
60 |
| L |
24.5 |
62.5 |