Ring Sizing Guide — Find Your Perfect Fit
Find Your Ring Size
Getting the right ring size is the most important step before ordering your Kayza Smart Ring. A ring that fits correctly will ensure accurate health tracking, comfort during sleep, and all-day wearability.
Method 1: String or paper strip (recommended)
- Cut a thin strip of paper or use a piece of string.
- Wrap it snugly around the base of the finger you plan to wear the ring on — most people wear smart rings on their index or middle finger.
- Mark where the paper overlaps, lay it flat and measure the length in millimetres.
- Use the size chart below to find your Kayza ring size.
Method 2: Measure an existing ring
If you own a ring that fits perfectly on the same finger, measure its inner diameter in millimetres and match it to the chart below.
Kayza ring size chart
| Kayza Size | Inner Circumference (mm) | Inner Diameter (mm) |
|---|---|---|
| 6 | 51.8 | 16.5 |
| 7 | 54.4 | 17.3 |
| 8 | 57.0 | 18.1 |
| 9 | 59.5 | 18.9 |
| 10 | 62.1 | 19.8 |
| 11 | 64.6 | 20.6 |
| 12 | 67.2 | 21.4 |
| 13 | 69.7 | 22.2 |
| 14 | 72.3 | 23.0 |
Sizing tips
- Measure in the evening — fingers are slightly larger later in the day.
- Between two sizes? Choose the larger size for daytime comfort.
- Knuckle check — if your knuckle is wider than the base of your finger, size up to your knuckle.
- Snug but not tight — for accurate health tracking, the ring should sit flush without leaving red marks.
Still unsure? Email us at customerservices@kayza-mena.store and we will help you find your perfect fit.