Specifications
Operating System CompatibilityNot ApplicableBuilt-in Storage0 gigabytesMetrics MeasuredNot ApplicableProtective QualitiesNone
Key Specs
Operating System CompatibilityNot ApplicableBuilt-in Storage0 gigabytesMetrics MeasuredNot ApplicableProtective QualitiesNone
General
Product NameOura Ring 4 Sizing Kit - Size Before You Buy the Oura Ring 4 - Unique Sizing - Receive Credit for PurchaseBrandOuraProduct TypeActivity trackerForm FactorRingModel FamilyOura Ring 4Model NumberJZ98-54869Year of Release2024ColorWhiteColor CategoryWhite
Design
Ring SizeAdjustableRing Size SystemUS
Display
Display ScreenNo
Compatibility
Operating System CompatibilityNot Applicable
Connectivity
Internal CarrierNot ApplicableWireless ConnectivityNone
Features
Built-in Storage0 gigabytesGPS EnabledNo
Activity
Metrics MeasuredNot Applicable
Performance
Protective QualitiesNone
Power
RechargeableNo
Warranty
Manufacturer's Warranty - PartsNot providedManufacturer's Warranty - LaborNot provided
Other
UPC6430060152304
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. The Oura Ring 4 Sizing Kit allows for you, and those around you, to find the ideal fit before purchasing. You can also size yourself in stores where there is an Oura Ring 4 display. A properly fitting Oura Ring will result in the highest possible data accuracy, comfort, and overall experience.
Free $10 gift card with purchase
Size yourself with the Oura Ring 4 Sizing Kit and receive a $10 Best Buy gift card to use towards the future purchase of an Oura Ring 4.
Choose a finger
Oura Ring 4 works on all fingers and can be worn on either hand. Make sure to size the finger you plan to wear your Oura Ring on - your fingers can be different sizes. For optimal performance and accuracy, we recommend wearing your Oura Ring on your index, middle, or ring finger.
Find your fit
Oura Ring 4 should fit snug around the base of your finger, but not to the point where it’s uncomfortable. The right size doesn’t feel too tight during daily wear or extended periods. When sizing yourself, the ring must fit over the largest part of your finger, like your knuckle.
Wear test
Your fingers expand and contract based on environmental factors, so we recommend wearing your ring sizer for 24 hours to confirm your best fit. Your ring should not rotate as you go about normal daily tasks. If you size in store, make sure to spend time sizing and try multiple sizes.
Sizes
Oura Ring 4 is available in sizes 4–15, and we currently do not offer half-sizes. Oura Ring sizes are slightly different from standard ring sizes, so you should not assume your ring size.
Materials
Our sizing rings are made of plastic, while the Oura Ring 4 is crafted in full titanium for comfort. Due to the plastic mold used to make our ring sizers, they may seem less comfortable than the actual Oura Ring you’ll end up receiving.
Learn more about legal disclaimers .
Legal Disclaimers
- *All battery claims depend on Oura Ring size, Oura App settings, feature configuration, activity, age of battery, usage, and many other factors; actual results will vary. Battery life and charge cycles vary by use and settings. Battery tests were conducted across various sizes and scenarios. See Ring Battery tips for more information.
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Q: QuestionWhen will you have the Oura Ring 4 for sale?(0 answers)
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Oura Ring 4 Sizing Kit - Size Before You Buy the Oura Ring 4 - Unique Sizing - Receive Credit for Purchase - White
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Reviews
Rating 4.8 out of 5 stars with 40 reviews
4.89 expert reviews
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Rated 5 out of 5 stars
Easy enough
It is awesome that Best Buy is willing to give you a $10 gift card to make up for the $10 cost to make sure you get the correct size of your ring! It’s a win-win
Posted by RyRo
Rated 5 out of 5 stars
Essential but Easy Step for Sizing Oura Ring 4
The Oura Ring 4 is their latest and most versatile device offering superb general purpose health and fitness monitoring. But in order to get the best, most accurate results from the ring it must fit properly. Fortunately, Oura has created a great kit which enables you to accurately determine the best size for the ring. Better yet, the kit is really free, with the small purchase price applied as a credit against the cost of the Oura Ring. The nicely packaged kit consists of twelve white plastic rings on a card holder. Each ring is clearly marked with its size, ranging from tiny (#4) to Hulk size (#15). The sizing rings are accurate avatars of the actual Oura Ring 4, with the same exterior dimensions and indentations on their inner surfaces which reflect the actual sensors on the inside of the Oura Ring 4. Each of the white sizing rings has its size posted in raised letters on the side and the card holder has the matching numbers for easy selection. So how do you decide which finger to select for the Oura Fitness Ring? Oura says that the ring can function on any finger, but recommends that you place it on your index finger. Next best choices are the middle finger or the ring finger. Key to a proper fit is to wear the sizing ring for 24 hours to get used to the feel on your hand. You may find that it interferes with some activity that you do often. For me, wearing it on my right hand felt uncomfortable when using my computer mouse, so my left hand was a better choice. Also, keep in mind that the fingers on your dominant hand (right for right-handed persons) may be somewhat larger than those on the other hand. Another consideration is to choose a ring size that can snugly fit several fingers. This will give you flexibility to shift the ring to another finger if you ever need to do so. Typically your index and ring fingers will be close in size. Wearing the sizing ring for 24 hours will also reveal if your finger swells over the course of a day’s activities. I found that my initial ring size choice got too tight after several hours, during which I did a typical daily run and bike ride. If you often exercise with weights you should include that in your 24 hour trial period. The main objective is to determine if you can comfortably wear the ring every day during your normal activities. If you have the patience to do so, extend the test period for a couple more days just to be sure that you like the fit. To choose your ring size, just pick one and slide it onto your chosen finger. Flex your hand and look for any significant gaps between the ring and your skin. The ring should fit snugly but still slip off fairly easily. Orient the sizing ring so that the number is visible on the top of your hand. This will properly position the indentations inside the ring to match the proper position of the sensors on the actual Oura Ring 4. If you find that two sizes both seem to work, Oura recommends that you select the smaller size to improve contact with the sensors. Even if you think you know your correct ring size, I still strongly urge you to purchase this Oura Sizing Kit. It really costs nothing and will make you more confident in your ring size selection. It is a great system and typical of the high quality and superb service you can expect from Oura.
Posted by JimC
Rated 5 out of 5 stars
Simple, high quality and accurate!
I've never owned or used a Fitness Ring before, so this was a brand new experience for me and I can say that the whole experience has been outstanding. Everything starts with this Sizing Kit. Please note that this kit is for the Gen 4 rings only and from what I understand, previous gen rings require their own distinctive sizing kit. With that being said, for what it is, I'm really impressed! This will be a simple review, for a simple product that works well to get you into the proper fit of your new ring. The packaging is very simple, considering it's just a bunch of plastic rings. On the inside, each ring is individually stamped with it's corresponding size and seated in it's own little "mound" that holds it in place. They're very easy to take out of their holding molds. The rings themselves are pretty nice quality and feel great on, although, given the plastic material they are made out of, they won't slip on and off as easily as a regular ring would - they're a bit "grippy", even moreso if you're hands have any form of sweat, water or condensation on them (or "clammy"). Now, Oura recommends wearing your actual ring on your Index finger, preferably. Otherwise, they recommend your middle or your ring fingers. I tried a size 10 and 11 on each of my Index fingers and the 11 seemed to do best, but felt a little too easy to slip off. The 10 worked on my right index finger, but...especially when my fingers swell...it made it a little too hard to get on and off. In addition to this, when holding a gaming controller or my phone, the index finger ring just wasn't comfortable, as I constantly felt is sliding against whatever was holding. Additionally, the middle finger just wasn't comfy for me at all - at least on my left hand, as it was always knocking against my wedding band, lol. So, this left me with one of my ring fingers, as my ultimate decision. I was really torn on the ring finger band to go on either my left hand, to replace my wedding band (I've lost over 100lb in the past year and a half, so it woefully needed to be resized), or on my right hand. My left hand was a size 9 and my right, a 10. I was tempted to go with the 10 on my right ring finger, simply because it just felt the best (my joint wasn't as big), but I noticed with it being my dominant hand, it would get more abuse. Oura actually recommends wearing your ring on your non-dominant hand, for this sole purpose, but ultimately, it doesn't matter what hand you prefer. In the end, I chose my left ring finger to replace my wedding band and submitted my choice for the size 9. I then proceeded to just wear the white plastic sizing band the entire time, until my ring came. This gave me the chance to exercise and work out with it, as well as to see how it holds up with my fingers swelling when I get hot, work out or get up, first thing of the morning. Plus, with the size number facing down, palm-side, I actually felt like it was kinda stylish! When I received my ring, I can say that the sizing was pretty spot-on, within a 1% margin, if I had to guess? The actual ring itself was by far MUCH easier to slide on and off my finger than it's sizing counterpart, even when I didn't use soap or water (which I very rarely have to do, anyway). Overall, the quality of the sizing kit is extremely well made, for what it is. All the details are laid out for you on the packaging and aside from wearing the band for a few days, minimum, it's very unobtrusive. This was a first-time experience for me and I'd give it a 5/5 rating, all the way. This was a very good first impression, as the excitement of receiving my ring built up! Good job, Oura!
Posted by Namdnas