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OURA

Oura Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase

    • Based on 82 reviews
Condition: New
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$10.00 Why this price?

Buy Now, Pay Later

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

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Mar 6
Order within 5 hours and 35 minutes
Available payment plans shown during checkout

Features

  • NOT STANDARD SIZING - Oura Ring 4 sizes are slightly different from standard ring sizes, so it is important to size yourself using our Oura Ring 4 sizing kit and to follow the instructions provided. Oura Ring 4 is available in sizes 4-15. There are no half sizes.
  • COMFORT AND ACCURACY - A properly fitting Oura Ring will result in the highest data accuracy, comfort, and overall experience.
  • CHOOSE A FINGER - Oura Ring 4 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring 4 on your index, middle, or ring finger. Size the exact finger you plan to wear your Oura Ring 4 on.
  • HOW IT SHOULD FIT - Oura Ring 4 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 4 Sizing Kit allows for you and those around you to find the ideal fit before purchasing. With a sizing kit purchase, a $10 credit will automatically be applied to your Oura Ring 4 at checkout. A properly fitting Oura Ring 4 will result in the highest possible data accuracy, comfort, and overall experience. Oura Ring 4 sizes are slightly different from standard ring sizes, so it is important to size yourself using our tools and to follow our sizing instructions. Oura Ring 4 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring 4 on your index, middle, or ring finger.

Package Dimensions: 6.73 x 4.45 x 0.55 inches


Item Weight: 1.76 ounces


Item model number: JZ98-54870


Other display features: Wireless


Color: White


Whats in the box: Oura Ring 4 Sizing Kit


Manufacturer: Oura


Country of Origin: China


Date First Available: October 3, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Mar 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

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.

Similar Products

Top Amazon Reviews

    • Test Before You Commit: A Practical Sizing Kit
I’ve always been on the fence about wearable tech, especially since fit and comfort matter so much. This Oura Ring sizing kit made the decision-making process easier and stress-free. It comes with multiple ring sizes, allowing me to try different options and wear them around the house to see what feels best. It’s not just about size; I could also figure out which finger the ring would be most comfortable on. The kit offers peace of mind since buying a smart ring without trying it first felt risky. The sizing process was seamless. I wore the sample rings for a couple of days to ensure I’d choose the size that wouldn’t feel too tight, even after wearing it all day. Plus, the fact that you get a purchase credit after using the kit made me feel like I wasn’t throwing money away just to figure out the size. It’s a small investment that saves a lot of hassle in the long run. If you’re serious about investing in the Oura Ring, this kit is a must. It made me more confident about my purchase and took away any anxiety about returns or exchanges. Highly recommend giving this a shot if you’re eyeing the Oura Ring. ... show more
Reviewed in the United States on October 23, 2024 by Baibhav Bhattarai
    • Must have if you want an Oura 4
So glad I bought these. I had an oura 3 sizing kit, however, the 4 came out before I got one, and I'm so glad I waited. I could barely fit a 13 of very 3, and now the 4 comes up to 15, found the 14 is a MUCH better fit. Bought my Oura 4 right away, and very happy I did.
Reviewed in the United States on October 31, 2024 by T
    • Cannot return sizing kit
Review Image by Ace Ace
Review Image by Ace Ace
I have a been a long time Oura ring customer (Gen 2 & Gen 3). I bought the sizing kit to get Gen 4, but changed my mind due to the cost ($350+) for a device that has Gen 3 features plus a few more. Unfortunately, Amazon/Oura does not allow the return of the sizing kit. $10 is not going to kill me, but free return would be nice. Please and thank you. Also, the subscription model is probably driving away a lot of potential customers. ... show more
Reviewed in the United States on October 28, 2024 by Ace Ace
    • $10 is worth it for a properly sized $500 ring
Don’t wing it - get the size kit and wear the ring on your finger for a day to see if you like it. I assumed I’d want the ring on my dominant ring finger (6), but with this kit actually found I prefer an index ring (8). I also would have completely gotten my index finger ring size wrong if I’d just decided to wing it. Glad I did this before making such a significant investment in a wearable. Poor fit is why my Apple Watch is gathering dust in a drawer. ... show more
Reviewed in the United States on November 6, 2024 by Kathryn
    • Makes sizing so easy
Clear instructions and makes it easy to get that perfect fit. Just difficult to get the ring and size if the purchase is planned as a gift.
Reviewed in the United States on October 29, 2024 by Stephanie Chernauskas
    • "Free" Oura sizer kit.
Needed this to get sized for the Oura 4 ring. It's $10 and then you get $10 off the purchase of a ring. So free essentially. I suggest wearing the sizer AS YOUR RING for a few days. I realized I needed to size UP because when I slept my fingers swelled a tiny bit, making it a bit uncomfortable and hard to remove. Good kit, and really a requirement for the ring. ... show more
Reviewed in the United States on October 23, 2024 by Travis B
    • Discount can't be applied on oura ring gen 4 . Size is most the same as sizing kit gen 3
Review Image by Paulo Garcia Paulo Garcia
Review Image by Paulo Garcia Paulo Garcia
Review Image by Paulo Garcia Paulo Garcia
Review Image by Paulo Garcia Paulo Garcia
A month ago I bought the sizing kit for gen 3 oura ring without knowing there was a gen 4 coming to the market. As i received the gen 4 sizing kit because they told that the sizes were different I realize that the size should be the same that I find out with the gen 3 sizing kit. After that i tried to buy the gen4 oura ring to get the discount but it cannot be applied because the QR code on the gen 4 sizing kit was redirecting me to the gen 3 oura ring instead to the gen 4 which I am willing to buy. By now I Already spent 20 usd and cannot get the disccount for the sizing kit that are now worthless for me. ... show more
Reviewed in the United States on October 17, 2024 by Paulo Garcia Paulo Garcia
    • Haven't used it just yet.
I'm leaning towards eventually buying the Oura 4 ring. And this kit is designed for that ring and not the earlier Gen 3. I'm holding off until after the holidays to see if there's another flood of smart rings coming out that don't charge you a subscription price which is still one of the sticking point for me on this ring. I may eventually end up buying it anyway because of what the ring offers. But I'm tired of people charging subscriptions for things. I have another ring sizing kit from a different company and when it comes time for me to buy a ring if I decide to, I will decide if this is the correct sizing kit or not. At least you get your money back from Oura for the sizing kit if you buy the ring. ... show more
Reviewed in the United States on November 4, 2024 by Rick D

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