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One Good Ring Size GuideUpdated 2 months ago

Finding the perfect fit for your One Good Ring is essential for comfort and functionality. Whether you’re buying your first One Good Ring or replacing one, this guide will help you measure accurately so you can get the right size.

Option 1: Measure Your Ring Size

  1. Wrap a strip of paper or string around the base of your finger.
  2. Mark where the paper or string overlaps.
  3. Measure the length (in millimetres) with a ruler. 
  4. Compare your circumference measurement to our ring size chart.
Ring SizeDiameter (mm)
Circumference (mm)
6
16.553
717.356
818.259
918.962
10
19.8
65
11 (v2 only)20.771

Option 2: Print Size Guide

Download the size guide below by clicking here and print it out on an A4-sized paper to accurately measure your ring size.

✨ Pro Tips:

  • Measure at the end of the day when your fingers are at their largest.
  • Avoid measuring when your hands are too cold, as fingers shrink slightly.
  • If you’re between two sizes, we recommend choosing the larger size for comfort.

Frequently Asked Questions

Q: Can I wear the One Good Ring on any finger?

A: Yes! The ring works the same on any finger, so choose whichever is most comfortable for you.

Q: How snug should the ring feel?

A: Your ring should slide on easily but resist a little when coming off, ensuring it won’t fall off during daily use.

Q: I bought a One Good Ring, but the size does not fit well.

A: Please email us, and we will be able to arrange for a size exchange.

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