Ring Sizing Tips

1. Choose your finger

For the best performance and accuracy, we recommend wearing your Ring on your index finger. If you’d prefer another, the middle and ring fingers can work as well. Avoid fingers where the base is narrower than the knuckle.

2. Ensure a comfortable fit

The sensor bumps inside your ring should be on the palm side of your finger. The ring should fit securely and comfortably around your finger’s base.

3. Test the fit

Make a fist while wearing the sizing ring. If you see a gap between the top of your finger and the inside of the ring, try a smaller size.