Peak UK Headwear Size Chart
| Size | XS | SM | LXL |
| Length CM (ear to ear) | 43-45 | 45-47 | 47-49 |
| Length CM (front to back) | 35-37 | 37-39 | 39-41 |
| Circumference CM | 47-49 | 50-52 | 53-55 |
| Size | XS | SM | LXL |
| Length CM (ear to ear) | 43-45 | 45-47 | 47-49 |
| Length CM (front to back) | 35-37 | 37-39 | 39-41 |
| Circumference CM | 47-49 | 50-52 | 53-55 |