Size Guide
Carriston Hat Size Guide
Finding the right hat size is simple. For the best fit, measure your head in centimetres, then match it to the size chart below. Measuring in cm is the most accurate method and helps avoid rounding errors.
How to Measure Your Head
Use a soft measuring tape or a piece of string.
Wrap it around your head just above your ears and across the middle of your forehead, where the hat will naturally sit.
Make sure the tape feels snug but not too tight.
Read the measurement in centimeters.
If you are between sizes, we recommend choosing the larger size for a more comfortable fit.
Carriston Size Chart
| Head Circumference (cm) | US Hat Size | Carriston Size |
| 53 cm | 6 5/8 | XXS |
| 54 cm | 6 3/4 | XS |
| 55 cm | 6 7/8 | Small |
| 56–57 cm | 7 – 7 1/8 | Medium |
| 58–59 cm | 7 1/4 – 7 3/8 | Large |
| 60–61 cm | 7 1/2 – 7 5/8 | X-Large |
| 62 cm | 7 3/4 | XXL |
| 63 cm | 7 7/8 | XXX-Large |
Duo Sizes
| Duo Size | Fits Head Size |
| S/M | 56–58 cm |
| L/XL | 59–61 cm |
Helpful Sizing Tips
- Measure in centimeters for the most accurate fit.
- If you are between two sizes, always choose the larger size.
- Hat sizing can vary slightly depending on the style, shape, and material.
- Wool and felt hats may soften slightly over time, while structured hats usually keep their shape.
If a specific product has a different fit, please check the product page for style-specific sizing details.
- Choosing a selection results in a full page refresh.