Before buying an Oura Ring, determine your Oura Ring size with a sizing kit. Wear the trial ring around your pointer finger, middle finger, or ring finger for at least a day. Try out different sizes as well. Read more about how to choose the right Oura Ring size here.
Product number | 979705 | |
|---|---|---|
Manufacturer code | JZ98-54867 | |
Brand | Oura | |
Processing of your defect | Carry-in warranty |
Type of health tracker | Measuring set for smart rings | |
|---|---|---|
Collection color | White |
Meet HRV |
|---|
Suitable for model | Oura Ring 4 |
|---|
Quality of health readings | Mediocre | |
|---|---|---|
Quality of sports readings | Mediocre |
Current product
9,99
9,99
Measuring set for smart rings
Measuring set for smart rings
Mediocre
Mediocre
Type of health tracker | Measuring set for smart rings | |
|---|---|---|
Quality of health readings | Mediocre |
According to our health tracker expert
You can easily measure your Oura Ring size with the various sample rings.
You'll receive the purchase price back as credit at Coolblue to buy your Oura Ring 4.
This sizing kit only has sample rings for the Oura Ring 4, so not for other models.
With the Oura Ring 4 Size Kit, you determine your Oura Ring size. The size of an Oura Ring is different from a standard ring size. Make sure to order this size kit first before ordering an Oura Ring 4. This way, you can be sure that you'll buy the correct size. You'll receive the purchase price of € 10 back in the form of credit. You can use this credit when you buy an Oura Ring 4 at Coolblue. This makes the size kit free. Make sure to wear the trial ring for 24 hours, as this ensures you know if the size is comfortable. The Oura Ring is most accurate when worn on your index finger. Is it uncomfortable? Try the ring on your middle or ring finger.
It seems like a good ring. I haven't had it long enough to really judge. I do have doubts about the durability, though, now that there are already a few scratches on it, without me having done anything crazy.
Jochem
23 October 2026
Automatically translated from Nederlands
