Hat Size Guide
FIND YOUR PERFECT FIT
A well-fitting hat makes all the difference. Use our size chart and measuring guide to find the right fit for your comfort and style.
HAT SIZE CHART
| Size | US Hat Size | Inches | CM |
|---|---|---|---|
| S | 6 ¾ | 21.3" | 54 cm |
| M | 7 ⅛ | 22.4" | 57 cm |
| L | 7 ⅜ | 23.2" | 59 cm |
| XL | 7 ⅝ | 24.0" | 61 cm |
| XXL | 8 | 25.2" | 64 cm |
| S/M | 7 ¼ | 22.8" | 58 cm |
| L/XL | 7 ½ | 23.6" | 60 cm |
US hat sizes are approximate equivalents. Measurements may vary slightly by hat style and construction. Please refer to individual product details for specific sizing information.
HOW TO MEASURE YOUR HEAD
- Use a soft measuring tape.
- Wrap the tape around your head, approximately ½ inch above your eyebrows and just above your ears.
- Keep the tape level and comfortably snug without pulling it too tight.
- Record your measurement and compare it with our size chart.

FIND YOUR PERFECT FIT
Between Sizes?
If your measurement falls between two sizes, we generally recommend choosing the larger size for a more comfortable fit.
Adjustable Hats
Some LUMINOUSY hats feature adjustable inner bands or drawstrings for a customized fit. Please check the individual product description for details.
One Size Fits Most
Certain styles are designed to accommodate a range of head sizes. Please refer to the product's specific measurements before purchasing.
SHINE AS YOU ARE.