You can determine your ring size using a ring you already own:
1. Download the detailed guide here.
2. Print the document at 1:1 scale.
3. Place the ring over the individual circles on the printout until you find the one whose edge aligns exactly with the inner circumference of the ring.
You can also determine your size using a strip of paper:
1. Wrap a thin strip of paper around the finger you wish to measure.
2. Mark with a pencil the point where it meets the start of the strip.
3. Measure the marked distance with a ruler. The number of millimeters corresponds to your ring size.
Keep in mind that the ring has to pass over your knuckle, so choose a size that slides over it comfortably. If you are choosing a wider band, we recommend going one size up.