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How to choose

a good size of FOI ring?

Tips For Ring Sizing

Ring Sizing Tips

1. Choose your finger

For the best performance and accuracy, we recommend wearing your Oura 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 Oura ring should be on the palm side of your finger. The Oura 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.

4. Evaluate the fit

Your fingers naturally expand and contract, so we recommend wearing your sizing ring for at least 24 hours to confirm the best fit. It also shouldn’t rotate as you go about your day-to-day.

Confirm Your Size

Already received your sizing kit? Once you've found your perfect fit, tap below to update your order.

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