Find Your Perfect Fit
All Secret Runway Hair units are available in two cap sizes. Getting the right fit ensures your unit sits securely, looks natural, and feels comfortable all day.
How to Measure Your Head
- Use a soft measuring tape (or a piece of string you can measure afterward).
- Start at your natural hairline at the center of your forehead.
- Wrap the tape around your head, following your hairline around the sides and across the nape of your neck.
- Note the measurement in inches where the tape meets the starting point.
Cap Size Chart
Cap Size Chart
| Size | Head Circumference | Best For |
|---|---|---|
| Extra-Small | 20.5 inches (52.1 cm) | Kid's sizing |
| Small | 21.5 inches (54.6 cm) | Petite to average head size |
| Medium | 22.5 inches (57.2 cm) | Average head size |
| Large | 23.5 inches (59.7 cm) | Average to larger head size |
Tips for the Best Fit
- If you measure between sizes, we recommend sizing up for comfort.
- All our units feature adjustable straps and combs for a secure, customizable fit.
- Still unsure? Contact us and we'll help you find the right size.
Note: Cap size refers to the circumference of the wig cap, not hair length or density.