Size Chart (Zephyr Fit Cap S-XL)
| CM | 53 | 54 | 55 | 55.9 | 56.8 | 57.8 | 58.7 | 59.7 |
| Inches | 20.87 | 20.25 | 21.62 | 22 | 22.37 | 22.75 | 23.12 | 23.5 |
| Men's | ||||||||
| Fitted | 6 7/8 | 7 | 7 1/8 | 7 1/4 | 7 3/8 | 7 1/2 | 7 5/8 | 7 3/4 |
| Stretch Fit | S | M | L | XL |
| CM | 53 | 54 | 55 | 55.9 | 56.8 | 57.8 | 58.7 | 59.7 |
| Inches | 20.87 | 20.25 | 21.62 | 22 | 22.37 | 22.75 | 23.12 | 23.5 |
| Men's | ||||||||
| Fitted | 6 7/8 | 7 | 7 1/8 | 7 1/4 | 7 3/8 | 7 1/2 | 7 5/8 | 7 3/4 |
| Stretch Fit | S | M | L | XL |