OTTO Standard Cap Sizing Chart
CAP SIZES & CROWN HEIGHT
Use the chart below to select accurate cap size and crown height. If you're between two cap sizes, order the smaller size for a tighter fit or the large size for a looser fit.
How to Measure
- Head Size: Use a measuring tape to measure the circumference of your head. Wrap it around where your hat will rest, typically about 1 inch (2.5 cm) above your eyebrows.
- Crown Height: Measure from the bottom center of the crown (where the brim begins) to the highest point of the hat.
ADJUSTABLE CAPS (Snapback, Hook & Loop, Metal Buckle, etc.) | |||
| STANDARD | CAP SIZE | HEAD SIZE | |
| IN | CM | ||
| Adult | 6 1/2 - 7 5/8 | 20.5 - 24 | 52 - 61 |
| Young Adult | 6 - 7 1/8 | 18.9 - 22.4 | 48 - 57 |
| Junior (Special Request - Not in Stock) | 6 5/8 - 7 1/4 | 21 - 23 | 53.5 - 58.5 |
OTTO FLEX | |||
| STANDARD | CAP SIZE | HEAD SIZE | |
| IN | CM | ||
| S/M | 7 - 7 1/4 | 22 - 22.8 | 56 - 58 |
| L/XL | 7 3/8 - 7 5/8 | 23.2 - 24 | 59 - 61 |
OTTO FIT | ||
| CAP SIZE | HEAD SIZE | |
| IN | CM | |
| 6 7/8 | 21.6 | 55 |
| 7 | 22 | 56 |
| 7 1/8 | 22.4 | 57 |
| 7 1/4 | 22.8 | 58 |
| 7 3/8 | 23.2 | 59 |
| 7 1/2 | 23.6 | 60 |
| 7 5/8 | 24 | 61 |
| 7 3/4 | 24.4 | 62 |
| 7 7/8 | 24.8 | 63 |
BUCKET, TRAPPER, & BOONIE HAT | |||
| STANDARD | CAP SIZE | HEAD SIZE | |
| IN | CM | ||
| M | 7 1/4 | 22.8 | 58 |
| L | 7 1/2 | 23.6 | 60 |
COWBOY & STRAW HAT | |||
| STANDARD | CAP SIZE | HEAD SIZE | |
| IN | CM | ||
| M | 7 1/4 | 22.8 | 58 |
| L | 7 5/8 | 24 | 61 |
HAT BAND | |||
| STANDARD | CAP SIZE | HEAD SIZE | |
| IN | CM | ||
| M | 7 - 7 1/8 | 22 - 22.4 | 56 - 57 |
| L | 7 1/8 - 7 1/4 | 22.4 - 22.8 | 57 - 58 |
CROWN HEIGHT | |||
| STANDARD | PROFILE TYPE | HEIGHT | |
| IN | CM | ||
| Adult | Low Profile | 3.2 - 3.3 | 8.25 - 8.4 |
| Mid Profile | 3.4 | 8.6 | |
| Pro Style | 3.9 | 10 | |
| Foam Front Low Profile | 3.35 | 8.5 | |
| Foam Front Mid Profile | 3.7 | 9.5 | |
| Foam Front High Crown | 4 | 10 | |
| Young Adult | Low Profile | 3.1 - 3.2 | 7.75 - 8.25 |
| Mid Profile | 3.2 | 8.25 | |
| Pro Style | 3.5 | 9 | |
| Foam Front High Crown | 3.5 | 9 | |