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OURA

Oura Ring 5 Sizing Kit - Size Before You Buy Oura Ring 5 - Unique Sizing, Not Standard Ring Sizing - Receive Amazon Credit for Oura Ring 5 Purchase

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As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Jun 18
Order within 22 hours and 49 minutes
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Style: Sizing Kit


Size: Sizing Kit


Color: Sizing Kit


Features

  • AVAILABLE SIZES - Oura Ring 5 is available in sizes 6-13. There are no half sizes
  • COMFORT AND ACCURACY - A properly fitting Oura Ring 5 will result in the highest data accuracy, comfort, and overall experience
  • CHOOSE A FINGER - Oura Ring 5 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring 5 on your index, middle, or ring finger. Size the exact finger you plan to wear your Oura Ring on
  • HOW IT SHOULD FIT - Oura Ring 5 should fit securely and comfortably at the base of your finger. Your ring should not rotate as you go about normal daily tasks. We recommend wearing your ring sizer for at least 24 hours to confirm your best fit

Description

The Oura Ring 5 Sizing Kit allows for you and those around you to find the ideal fit before purchasing. With an Oura Ring 5 Sizing Kit purchase, an Amazon credit will automatically be applied to your Oura Ring 5 at checkout. A properly fitting Oura Ring 5 will result in the highest possible data accuracy, comfort, and overall experience. Oura Ring 5 sizes are slightly different from standard ring sizes and other Oura Ring generations. It’s important to size yourself and follow sizing instructions. Oura Ring 5 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing on your index, middle, or ring finger.

Package Dimensions: 6.26 x 4.29 x 0.55 inches


Item Weight: 1.76 ounces


Item model number: JZ98-63255-AZ


Other display features: Wireless


Color: Sizing Kit


Whats in the box: Oura Ring 5 Sizing Kit


Manufacturer: Oura


Date First Available: May 28, 2026


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 18

This item is non-returnable:

Final sale - No returns

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • ✨ essential for getting the right size ✨ essential for getting the right size
Style: Sizing Kit Size: Sizing Kit Color: Sizing Kit
Review Image by Yairis Ch
The Oura Ring 5 Sizing Kit is an essential tool if you're considering buying the ring. What I liked most is how accurately it identifies the correct size before making the final purchase, preventing costly mistakes or discomfort later. The trial rings feel realistic in weight and shape, which greatly helps simulate everyday wear. Wearing it for several days was key to noticing how comfort changes depending on the time of day and the natural swelling of the fingers—something not usually considered when choosing a size. I also appreciate that the process is simple and well-organized, making the selection experience clear even for someone who has never worn a smart ring before. As a possible improvement, it would be helpful to include a more visual guide or more specific recommendations based on lifestyle (e.g., sports, manual labor, etc.), as this could help decide between two sizes when they are very close. Overall, it's a necessary and very well-designed step to ensure a correct purchase and a more satisfying experience with the Oura Ring. ... show more
Reviewed in the United States on June 1, 2026 Reviewed in the United States on June 1, 2026 by Yairis Ch
    • Definitely buy before purchasing the Oura ring!
Style: Sizing Kit Size: Sizing Kit Color: Sizing Kit
Great that you can use this for sizing. I just got done wearing for 24 hours. My size is NOT what I expected. Definitely worth the money before investing in the Oura ring. And you get the money back when purchase the ring.
Reviewed in the United States on June 11, 2026 by susan petroshius
    • 4 VS 5
Style: Sizing Kit Size: Sizing Kit Color: Sizing Kit
This is so much smaller than the 4. Sizing is almost identical, but ring itself is half the size.
Reviewed in the United States on June 4, 2026 by Taylor B
    • Works as expected
Style: Sizing Kit Size: Sizing Kit Color: Sizing Kit
Sizing kit was unique to the oura ring 5 and gave me a good idea of how much smaller the ring is than my oura ring 4
Reviewed in the United States on June 3, 2026 by A
    • The best Oura Ring Sizing Kit The best Oura Ring Sizing Kit
Style: Sizing Kit Size: Sizing Kit Color: Sizing Kit
Review Image by Theresa
The Oura Ring 5 Sizing Kit is easy to use and find the right ring size fit.
Reviewed in the United States on June 7, 2026 Reviewed in the United States on June 7, 2026 by Theresa
    • Get it!!!!
Style: Sizing Kit Size: Sizing Kit Color: Sizing Kit
So glad I got the kit! The sizing is different from previous generations!
Reviewed in the United States on June 8, 2026 by Amy Robinson
    • I guess larger hands don’t matter!
Style: Sizing Kit Size: Sizing Kit Color: Sizing Kit
It is so disappointing that Oura went back to only the smaller rings. People who wear size 14 or 15 rings actually actually find value in this product, but I guess Oura doesn’t find value in having us. I guess another company can get my money!!
Reviewed in the United States on June 9, 2026 by Brian Hughes
    • Great for try-before you buy.
Style: Sizing Kit Size: Sizing Kit Color: Sizing Kit
This is accurate and allows you to chose the perfect size Oura Ring.
Reviewed in the United States on June 6, 2026 by BizzeeMe

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