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Oura Ring 5 Sizing Kit
Purchase an Oura Ring 5 Sizing Kit to find your size before you buy your Smart Ring. Oura Smart Ring sizes are different to standard ring sizes. Your fingers naturally expand and contract, so we recommend wearing your sizing kit ring for at least 24 hours to confirm the best fit for you. For optimal performance, the ring should be worn on the index, middle, or ring finger.













































