Customer Ratings & Reviews

If you are planning to get the Oura Ring 4, do not try to guess your size based on standard jewelry or previous versions. The sizing for the 4 is completely unique, and this kit is the only way to get it right. The Strategy: The best advice I can give is to wear the plastic test rings for a full 24 hours, including while you sleep and workout. Your fingers swell and shrink throughout the day. I was initially convinced I was a Size 11 because it felt comfortable instantly, but after spending more time with the kit, I realized the Size 10 was the better fit. You want it snug enough so the sensors always touch your skin, but not so tight it gets stuck. The Value: Since Best Buy gives you a credit for the cost of this kit toward the actual ring purchase, there is literally no reason not to get it. It saves you the headache of having to mail back the actual ring for an exchange later. Verdict: It’s a simple plastic kit, but it’s a mandatory part of the process. Trust the kit, wear the sizers for a full day, and you’ll get the perfect fit.

Use to find size of oura ring. Highly recommended to ensure right size. Try few over course of days. Your fingers swell sometimes over day or temp changes and dot. Want it too lose or tight

This is a must before purchasing the oura ring. Wearing different size rings during the day and overnight makes you aware of how your fingers may swell from time to time. Really helps to identify which fingers the oura ring fits on the best. I also took a ring that was well fitting and placed it on one of the sizes, to assist with my decision.

Definitely needed and worth it before purchasing! I winged it and bought my normal size at first then had to return it and buy a sizing kit... They give you a $10 gift card to put towards the purchase of the ring (or anything in the store).

Fits well, and I like the comfort of it also. Nice to be able to monitor sleep and health. Had a little flu and the ring picked up that I wasn't at my best. Crazy!

I brought this to find my size for the Oura ring is amazing because you can sleep with those rings to trying to get the right size before you buy the Oura ring .

I love this it’s so exceptional perfect and fitting for the purpose it was bought.

I love the. Aura ring it’s perfect and gentle on hands

Recieved this item less than a week after ordering, would pass on to my friends. I like that I recieved a gift card for purchasing the kit.

Love my Oura ring! Bought the sizing kit and got a gift card to offset price.

I think it’s such a great idea cause I tyou could size your ring get your favorite Oura :)

I had an excellent experience ordering from Best Buy. It was fast and they always let me know where the package was. I loved ordering here!

Bought this to check my aunt's ring size and helped us get the perfect ring we bought at Jared. Thank you Best Buy for the $10 Gift certificate !

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

PRODUCT Oura Ring 4 Sizing Kit - Model:JZ98-54869 SKU:6594681 QUICK SUMMARY You owe it to yourself to get this kit and spend some time with the different sizes and different fingers. Don’t skip this important step. I wish I had gone a few more days. REVIEW At first, I was skeptical on the value of the ring kit. It was very helpful in finding the right finger and size. For example, I started with a size 11 and my left index finger. Overnight, I guess my fingers swell up a little, and the #11 was uncomfortable and I could not easily remove it, so I went to a size 12 which fit a lot better. Because I was leaving on a trip shortly, I called it good enough and ordered the #12. I wish I spent more time with the ring kit. As I went through my daily routines for a week with the real ring, I came to hate it on my Left Index Finger. I only had one other finger that fit, and that was my right middle finger. I would suggest that you take at least a full week to make sure that you give the ring a test run in all your situations. In my case I had only tested in on a weekend where I had nothing going on. As the week progressed, I found the ring getting in the way of a lot of things. RECOMMENDATION 100% recommend you get and use this sizing kit for at least a week before investing so much on a ring and not being perfectly happy.

With a device that greatly depends on having a secure fit, you want to be sure you have the perfect size as being a size off can alter readings. The Oura ring sizing kit solidifies the choice, so you don't make the mistake of upsizing or downsizing your new Oura Ring. The kit comes with 12 different options, and more-than-likely, you will be stuck between two different sizes with uncertainty of the right choice. This is why Oura recommends testing different sizes for 24 hours as our fingers shift in size throughout the day, specifically during workouts, overnight and after meals containing high salt content. I have been wearing both sizes, 12 and 13 for a few hours and taking the extra time to test is different scenarios has been vital in verifying for the final choice. If you don't catch the small detail, Oura recommends that if you're choosing between two sizes, go with the smaller. It's also recommended to wear on either your index or middle finger for the best result. When going through sizes, verify your choice can be swapped between the two in needed, which may help finalize the correct size. Packaging is simple, and easy to follow with sturdy rings that hold up for testing in various situations. Take the time and get the right size. It's worth it!

The Oura ring sizing kit for OURA Ring 4 is pretty straight forward. It comes in a nice secure package that has ring sizes from 4-15. They are very durable plastic ring molds that mimic the Oura ring with its nodes and grooves. If you are looking to purchase an Oura ring, this kit is a must have to ensure you have the right size. For me I initially thought I would want a size 12, but after the recommended 24 hours I was more comfortable with a size 13. The main reason being is my activities and the snugness when doing activities felt uncomfortable at a size 12. I switched out to a size 13 and my finger did not have any discomfort at all. Testing out the ring, I would advise prospective buyers to do your normal routines and then some other activities. I mowed the lawn, cleaned the garage and even swam with it. These differetn activities gave me the idea of how my hands would swell and decrease. Nothing worse than an over snug ring when you are swollen from working outside in the heat. This kit is well worth the time and effort for a long term investment. The added $10Best Buy gift card for returning is a nice aspect.

Getting an Oura Ring couldn't be easier with this ring sizing kit. I was excited to see Oura is releasing an updated ring. To buy an Oura ring, you first pick up their ring sizing kit, either in-store or have it shipped. Choose the size that fits and wear it for a day to make sure it's comfortable. To ensure your comfort while checking your size, the bumps and cutouts in each of the the sizer rings match the actual ring. I love that they go up to a size 15! Once you determine your best size, you can go back to your local Best Buy store to make your purchase and take home your ring immediately or you can scan the barcode on the back of the box and place the order with your phone and then have your ring shipped to you. My previous ring was shipped via FedEx and arrived very quickly. Having lost a significant amount of weight, this ring sizing kit made it easy for me to verify my ring size did go down. I also like that you will be refunded for the cost of the sizing kit when you purchase your new Oura Ring. Yes, I would recommend this to a friend.

The sizing kit was very useful. I recommend following the instructions. In particular: 1. If you are in between sizes, picking the smaller size -> I’m so glad I picked the smaller size because the larger size ended up falling off my finger while doing a load of laundry! 2. Making a fist and making sure there’s no gap -> Even picking the smaller size, I still see a small gap, but certainly less than the bigger size. From what I read, picking the right size ensures you get more accurate measurements and, so far, the Oura ring measurements shown in the app seem pretty accurate. 3. Wearing the temporary rings in the sizing kit for a few days -> This was key. I originally did not think this was necessary but it is! I actually was undecided about which finger to wear the ring on, and therefore I had 3 potential sizes. At first I thought to pick the largest of the 3 so I can wear it on multiple fingers as needed. However, the largest fell off my finger while putting the clothes in the washing machine! I then went on a hike and took the other 2 sizes. Fingers tend to swell at different times of the day, and I could feel that especially when hiking. I thought this meant I would most likely pick the larger size for comfort. In the end, this ended up not being the case. While the larger size could be a tad more comfortable sometimes, the majority of time, the small one feels fine and hugs my finger better, not falling easily when taking a shower, swimming, or washing my hands for example. But most importantly, the Ring website mentions the measurements are more accurate when the ring touches all the surface of your finger even when making a fist. I am happy I chose the smaller one. Having said that, make sure to choose something that is comfortable to you, because if you do choose something too small that ends up hurting your finger, you will end up not using it.

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.