Trucker Hat Size Guide
| A (cm) | B (cm) | C (cm) | D (cm) | |
| One Size | 55-60 | 9.85 | 6.35 | 17,15 |
* Measure your head circumference with a non-elastic tape measure. Place one end of the tape on your forehead and wrap the rest around your head, keeping it above your ears. Hold the point where the tape meets the other end, lift the loop you've formed over your head, and record the measurement.