Columbia Clothing Size Chart
Adult Headwear Size Chart
| Hat Size | S/M | L/XL | Adjustable One Size | One Size |
| Adult Head Size (in.) | 21 - 22 | 22 - 24.25 | 21.25 - 24.5 | 21 - 23.5 |
| Adult Hat Size | 6 5/8 - 7 | 7 - 7 3/4 | 6 5/8 - 7 3/4 | 6 1/2 - 7 1/2 |
Youth Headwear Size Chart
| Hat Size | S/M | L/XL | Adjustable One Size | One Size |
| Youth Head Size (in.) | 19 - 21 | 21 - 22.75 | -- | 19.75 - 22 |
| Youth Hat Size | 6 - 6 7/8 | 6 7/8 - 7 1/4 | -- | 6 1/4 - 6 7/8 |
