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Oura Ring 4 Sizing Kit - 2 of 4Oura Ring 4 Sizing Kit - 3 of 4Oura Ring 4 Sizing Kit - 4 of 4
Oura Ring 4 Sizing Kit - 1 of 4

Oura Ring 4 Sizing Kit

In Stock

Eligible for registries and wish lists

About this item

Highlights

  • GIFT CARD WITH PURCHASE - Receive a $10 Target gift card to use towards Oura Ring 4 purchase.
  • SPECIFIC SIZING - Oura Ring 4 sizing is different from Oura Ring Gen3 sizing. For Oura Ring 4, size with the Oura Ring 4 Sizing Kit.
  • CHOOSE A FINGER - The Oura Ring 4 works on all fingers and can be worn on either hand.
  • INDEX FINGER IS MOST ACCURATE - For optimal accuracy, we recommend wearing your Oura Ring on your index, middle, or ring finger.
  • HOW IT SHOULD FIT - Oura Ring 4 should fit securely and comfortably at the base of your finger.
  • SIZE FOR ALL DAY USE - Your ring should not rotate as you go about normal daily tasks.
  • 24 HOUR TRIAL - We recommend wearing your ring sizer for at least 24 hours to confirm your best fit.
  • OURA RING 4 SIZES - Oura Ring 4 is available in sizes 4-15. There are no half sizes.
  • SIZER MATERIALS - Ring sizers are made of plastic, while Oura Ring 4 is crafted with titanium.

Description

The Oura Ring 4 Sizing Kit is a custom sizer that allows for you, and those around you, to find the ideal fit before purchasing. Oura Ring 4 sizes are slightly different from standard ring sizes, so it is important to size yourself using our sizing tool and to follow our instructions. A properly fitting Oura Ring 4 will result in the highest possible data accuracy, comfort, and overall experience.

Easy steps to start your health journey today!
1. Purchase the Oura Ring 4 Sizing Kit.
2. Learn your Oura Ring 4 size by wearing a sizing ring for at least 24 hours.
3. Purchase your Oura Ring 4 online or in a Target store near you.


Looking for the best health tracker? Whether you’re searching for a sleep ring or fitness ring, Oura Ring is for you— this revolutionary smart ring that allows you to discreetly track your sleep, activity, recovery and stress, in style.
Weight: .1 Pounds
Compatible With: No Applicable Model
Material: Plastic
Battery: No Battery Used
TCIN: 92396509
UPC: 6430060152311
Item Number (DPCI): 057-03-4787
Origin: Imported
If the item details aren’t accurate or complete, we want to know about it.

Shipping details

Estimated ship dimensions: 4.4 inches length x 6.2 inches width x 0.5 inches height
Estimated ship weight: 0.1 pounds

Return details

This item cannot be returned; please reference our return policy for more information.
See the return policy for complete information.

Q: Does the $10 gift card have to be used towards the purchase of the ring? I want to buy the sizing kit but plan to ask for the ring as a gift from someone else.

submitted by Kayla m - 8 months ago
  • A: Yeah it’s not how oura rings work.

    submitted byCourtney - 4 months ago
  • A: Hi, thank you for reaching out about Oura Ring 4 Sizing Kit. The details does state you will receive a $10 Target gift card to use towards Oura Ring 4 purchase. If you have any additional questions, we welcome you to contact MyTGTtech at 833-848-8324 every day, between 7am-11pm CST.

    submitted byMatt - 8 months ago
    Target expert support

Q: What is the internal size of each ring in mm?

submitted by wit - 1 year ago
  • A: Hi wit, thanks for reaching out about Oura Ring 4 Sizing Kit The internal size of the ring varies based on the size of the ring selected. If you have any additional questions, we welcome you to contact MyTGTtech at 833-848-8324 every day, between 7am-11pm CST.

    submitted byJustin - 1 year ago
    Target expert support
  • A: It depends on the size of the ring itself. The sizing kit will help you determine approximately what it is. This product page is for the sizing kit only, not the individual rings.

    submitted byceleste80 - 1 year ago

Q: Hi! How to get a target gift card10$ purchasing oura ring size kit?

submitted by Alex V - 1 year ago
  • A: After your purchase is completed online, you will be emailed information and the $10 gift card to use towards the Oura 4 Ring purchase.

    submitted byceleste80 - 1 year ago
  • A: Hi Alex V, thanks for reaching out about Oura Ring 4 Sizing Kit. To better understand your individual needs, we welcome you to contact MyTGTtech at 833-848-8324 every day, between 7am-11pm CST.

    submitted byJoe - 1 year ago
    Target staff support

Q: does the sizing kit work to figure out what size you are

submitted by brassring - 1 year ago
  • A: lol yes that’s the point

    submitted byAubs17 - 1 year ago
  • A: Hi brassring, thanks for reaching out about the Oura Ring 4 Sizing Kit. Yes, the Oura Ring 4 Sizing Kit can help you determine the right size Oura Ring for you. The Oura Ring 4 Sizing Kit is designed to help you find the best fit before you buy the ring If you have any additional questions, we welcome you to contact MyTGTtech at 833-848-8324 every day, between 7am-11pm CST.

    submitted byRena - 1 year ago
    Target expert support

Q: Can I wear the ring on any finger?

submitted by AI Shopping Assistant - 3 days ago
  • A: Yes, the Oura Ring 4 can be worn on any finger and either hand.

    submitted byAI Shopping Assistant - 3 days ago
    Ai generated

Q: What is the best finger for accuracy?

submitted by AI Shopping Assistant - 3 days ago
  • A: For optimal accuracy, it’s best to wear the ring on your index, middle, or ring finger.

    submitted byAI Shopping Assistant - 3 days ago
    Ai generated

Q: Is there a gift included with the purchase?

submitted by AI Shopping Assistant - 3 days ago
  • A: Yes, a $10 Target gift card is included with the purchase of the sizing kit.

    submitted byAI Shopping Assistant - 3 days ago
    Ai generated

Q: What materials are the sizing rings made from?

submitted by AI Shopping Assistant - 3 days ago
  • A: The sizing rings are made of plastic, while the Oura Ring 4 itself is crafted from titanium.

    submitted byAI Shopping Assistant - 3 days ago
    Ai generated

Q: How do I determine my ring size?

submitted by AI Shopping Assistant - 3 days ago
  • A: Wear the Oura Ring 4 sizing ring for at least 24 hours to find your ideal size.

    submitted byAI Shopping Assistant - 3 days ago
    Ai generated

Q: Is the ring 4 similar sizing to ring 3?

submitted by EH - 2 months ago
  • A: Hi, thanks for reaching out about Oura Ring 4 Sizing Kit. While the sizes correspond to the same numbers, the fit is different. Because the Oura Ring 4 has a smooth, flush interior without the three raised sensor bumps found in the Gen 3, it often feels looser than the older model. Here is the breakdown of why you should use the new sizing kit: Key Sizing Differences The "Bump" Factor: The Gen 3 sensors "gripped" the finger. Without those bumps, a Size 10 in the Oura Ring 4 will feel roomier than a Size 10 in the Gen 3. Expanded Range: The Oura Ring 4 sizing kit includes more sizes, ranging from 4 to 15 (the Gen 3 kit only went from 6 to 13). Kit Colors: To help you distinguish them, the Oura Ring 4 kit uses white plastic sizers, whereas the Gen 3 kit used black ones. Should you change your size? If your Gen 3 was snug: You will likely stay the same size. The Ring 4 will feel more comfortable and less "pinched." If your Gen 3 was already a bit loose: You may need to size down for the Ring 4. Since the ring is smooth, it is more prone to rotating on your finger if it isn't snug. Between sizes? Oura still doesn't offer half sizes. If you are between sizes on the new kit, they generally recommend choosing the smaller size to ensure the sensors maintain constant contact with your skin. If you have any additional questions, we welcome you to contact MyTGTtech at 833-848-8324 every day, between 7am-11pm CST.

    submitted byJoe - 2 months ago
    Target staff support

Additional product information and recommendations

4.0 out of 5 stars with 73 reviews
37% would recommend
8 recommendations
1 out of 5 stars
Thumbs down graphic, would not recommend
6 April, 2026Verified purchase

no gift card as advertised

did not get my gift card. I got one for the monthly feebie for April and not for purchasing this. I bought the ring the next day on the target app. still waiting for an email response.
sissy
quality: 1 out of 5
value: 1 out of 5
Did you find this review helpful?
1 out of 5 stars
Thumbs down graphic, would not recommend
25 February, 2026Verified purchase

Missing Rings

Bought this and had shipped to our house. The package was previously opened when it arrived and it was missing two rings. This item is also not returnable. Very disappointed.
jchan
quality: 1 out of 5
value: 1 out of 5
2 guests found this review helpful. Did you?
5 out of 5 stars
Thumbs up graphic, would recommend
9 February, 2026

$10 Ring Set+$10 Gift Card =$10

Pay $10 for the rings and get a $10 gift card. You can use the gift card for anything, not just the ring. Why the low ratings? Why would Target give you a $10 gift card and let you get $10 more with a return? And if they did allow returns, but didn’t give you a gift card isn’t it the same?
Corinne
quality: 5 out of 5
value: 5 out of 5
7 guests found this review helpful. Did you?
5 out of 5 stars
Thumbs up graphic, would recommend
25 January, 2026Verified purchase

Perfect

Perfect for getting right size. Left on 24 hours and actually switched the finger I was going to wear it on because it was bothering me when i would use my phone. If it wasn’t for the sizers i wouldn’t have known that was an issue.
B
quality: 5 out of 5
value: 5 out of 5
4 guests found this review helpful. Did you?
1 out of 5 stars
18 December, 2025Verified purchase

(no review title)

Misssing rings.
dacey
3 guests found this review helpful. Did you?
5 out of 5 stars
Thumbs up graphic, would recommend
7 December, 2025Verified purchase

(no review title)

I don’t know why anyone is writing a negative review… you buy this get a $10 GC it’s free and that easy. Has 0 issues doing this…
Brianna
15 guests found this review helpful. Did you?
1 out of 5 stars
3 December, 2025Verified purchase

(no review title)

I was supposed to get a $10 gift card with this item and Target did not give me
Dee
3 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
26 November, 2025

Gee willikers

How dystopian that you can't just go to the store and get sized for a 500 dollar ring for free.... They charge you to even find out what size you are .
ThatsaYikesfromme
quality: 1 out of 5
value: 1 out of 5
41 guests found this review helpful. Did you?
1 out of 5 stars
25 November, 2025Verified purchase

(no review title)

The package was opened when I received it. One of the rings was missing. And it’s non returnable even though it should have never been sold to me in this condition. Clearly someone returned it…
Connie
quality: 1 out of 5
value: 1 out of 5
16 guests found this review helpful. Did you?
1 out of 5 stars
9 November, 2025Verified purchase

(no review title)

Even though I purchased the ring I was still unable to return the sizing kit.
Meghan
6 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
15 October, 2025Verified purchase

Not accurate to product

We were buying this as a gift, we tried on th rings and wore the size for the 24 hour period. We bought the ring and it was larger than the actual product, we now have to return the ring and order another size
Justin
quality: 1 out of 5
value: 1 out of 5
28 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
17 November, 2024Verified purchase

do not purchase

do not purchase any Oura items from target, the items do not work and the store will not accept a return
SR
131 guests found this review helpful. Did you?

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