PLEASE NOTE THAT OURA RING SIZING IS DIFFERENT THAN STANDARD US RING SIZES. THIS OURA RING IS SIZE 9. In the sizing measurements, the first measurement is the ring’s inner diameter, the second one is the inner diameter where the sensor bump is. Size 9: 19.25 mm, 17.63 mm.
PLEASE NOTE THAT OURA RING SIZING IS DIFFERENT THAN STANDARD US RING SIZES. THIS OURA RING IS SIZE 10. In the sizing measurements, the first measurement is the ring’s inner diameter, the second one is the inner diameter where the sensor bump is. Size 10: 20.02 mm, 18.41 mm.