Choose smaller
- You want the most secure sensor contact.
- Your fingers rarely swell.
- The fit is snug but comfortable.
Solix Ring Guide
Find your fit.
The right fit keeps your Solix Ring comfortable and its sensors close to your skin for consistent readings.
Snug, not tight. Your ring should stay in place without rotating freely, while still being easy to remove.
01
Your usual size
Should I size up?
In most cases, no. Solix Ring uses standard US ring sizes, so choose your normal size if you already know it.
Because a smart ring is wider than a traditional jewelry band, it may feel slightly more secure on your finger.
Choose the larger size only if:
- You are between two sizes.
- You prefer a looser fit.
- Your fingers tend to swell during the day.
02
Best signal
Finger placement
For the most accurate readings, we recommend wearing Solix Ring on your index finger.
BestIndex fingerRecommended
GoodMiddle fingerSecure fit
GoodRing fingerComfortable fit
03
Quick decision
Between two sizes?
Choose larger
- Your fingers swell often.
- You plan to wear it day and night.
- The smaller size feels restrictive.
04
US measurements
Size chart
| US size | Inside diameter | Finger circumference |
|---|---|---|
| 7 | 17.3 mm | 54.3 mm |
| 8 | 18.1 mm | 56.8 mm |
| 9 | 18.9 mm | 59.3 mm |
| 10 | 19.8 mm | 62.1 mm |
| 11 | 20.6 mm | 64.7 mm |
| 12 | 21.4 mm | 67.2 mm |
| 13 | 22.2 mm | 69.7 mm |
| 14 | 23.0 mm | 72.2 mm |
How to measure: Wrap a strip of paper around the base of your finger, mark where it overlaps, then measure that length in millimeters. Measure at the end of the day when your fingers are warm.