Customer Ratings & Reviews

I appreciated the full range of ring sizes in the kit. They recommend wearing it for 24 hours and that’s what I did. If you’re wondering if wearing an extra ring would bug you while you sleep, this is great for testing that out, too. By having the different sizes, I was able to try it on different fingers with different sizes at my leisure, as I was even trying to figure out which finger I want to wear this ring on. Since the sizers come in white, I could see what a light color might look like. I used a marker on one side to give me a feel for what a darker color might look like. If I’d just tried one on in the store for a few minutes, I may have selected the wrong size, so having a kit that lets you wear a size for many hours is helpful. The sizers even have little nibs on the inside and reassured me that the interior of the actual Oura ring won’t bother me, as I can be sensitive to textures. You can go back into Best Buy or scan the QR code on the box to get your $10 credit toward the ring. The sizing kit was shipped to me quickly. If you’re looking at the Oura ring, do get the sizing kit and give yourself time to choose the right fit.

TLDR: The ring sizing kit is the perfect way to make sure you get the exact Oura ring you need. USE / THOUGHTS The Oura 4 ring sizing kit from Best Buy is as simple as it can get. Purchase the kit, find out which size band fits your desired finger, wear 24hrs to confirm it's comfortable, and return to Best Buy. It doesn't get any easier or simpler than this. While you might not get a completely perfect fit, the sizing kit includes sizes that should fit most everyone. At first I was a bit put off by the price of the sizing kit, but if you look at the back of the packaging, the price paid includes a $10 BB gift card, thereby offsetting the purchase price. Excellent work Best Buy! A very smart and thoughtful way to get folks the correct product with the correct size, as I'm sure this is a common issue with folks buying Oura rings. Who really has their ring size memorized, especially if the Oura is worn on anything other than your traditional ring finger. If you are going to buy a Oura Ring 4, this sizing kit is a no-brainer. RECOMMENDED

This is a great way of taking the guesswork out of Oura rings. The sizers fit both the circumference of the various sizes as well as the thickness of the actual ring. It gives an immediate sense for how the ring will feel and weigh on your finger. It's also more accurate than the old "measured piece of string" trick they use at jewelers. I thought for sure I'd take a size 11. Turns out, size 12 feels far more comfortable for me, and gives my finger room for subtle changes in size due to weather changes our water retention issues (we hate to admit it, but even guys get bloated at times). Overall, I think this is an amazing way to figure out the proper ring size without penalty, and makes a great gift for a loved one who wants a smart ring as well. Give them the size kit and let them find the perfect size. Then get the right ring on the first go. No annoying returns, no buying the wrong size and getting "THE LOOK" when you bought a size 8 and she's actually a size 6. Best of all, the sizer rings are super durable feeling, so I'm going to keep them around for future jewelry purchases. It's a great concept.

When considering an Aura ring, the sizing kit is a must, specially if buying online. Best Buy stores have in-store sizing kits however. Arrived in a paper box with a grid of all of the 12 different Oura Ring sizes. Unlike generic ring measurement tools, each ring is an exact plastic replica of the Oura ring, with the same thickness and all the indentations and sensor marks on the inside, so I was able to wear my chosen size for a few days to make sure I'd feel comfortable wearing the ring. If buying online, the back of the box has a QR code to go directly to choosing the ring. Also note that the Oura ring sizes do not follow US ring sizes, so this is really a must if thinking about an Oura ring. Initially went back and forth how I was going to wear the ring, so different fingers, different sizes, gave me all the time I needed to decide, and can wear different sizes at a time, which makes it very practical. The ring samples are white plastic, and everything else is paper based, recyclable.

This is my second time using an Oura ring sizing kit. I previously used one for the gen 3 ring. The two biggest differences between this and the first kit are it’s a different color (white), and the ring sizers in this kit a lack the simulated sensor bumps on the inside. This leads me to believe the inside of the upcoming Oura ring 4 may not have the same three interior sensor bumps as the Oura ring 3. The sizing kit ships with 12 sizes from 4 to 15. Sizing can be hit or miss, especially for those between sizes. A good fit is essential to proper operation of the ring, so it is suggested to find a snug fit on the desired finger and to wear the sizer for 24 hours to account for any temporary swelling or other changes in finger size. I got the perfect size last time and despite the lack of sensor bumps this go-round, it appears to be the same size as last time. The cost of the sizing kit can be credited to a subsequent Oura ring purchase. The box I received has a QR code redemption specific to Best Buy, but I verified this offer is available through other vendors as well.

If you're interested in an Oura Ring 4, you've gotta get this ring sizing kit since it'll save you the trouble of ordering the wrong ring size. What you'll get in the box is a nice tray of white plastic rings in different sizes from 4 to 15. Each ring sizer is smooth white plastic and you can try them out on whatever finger you plan to wear your ring on. Looking online, it seems most people wear their smart rings on their middle 3 fingers. They recommend wearing the ring sizer for 24 hours, sleeping with it, etc to make sure you are fully comfortable with it. After deciding on your proper ring size, you can then place your order for the Oura Ring 4. As a bonus, you basically can get this kit for free because it comes with a $10 code for a Best Buy gift card after you purchase your Oura ring 4 and it should show up at checkout. When you're buying a smart ring like the Oura Ring 4 that's as pricey as a smartwatch, it's important to get the sizing right, so get this ring sizing kit! It reminds me of the old adage, measure twice and cut once!

This sizing kit is essential for choosing an Oura Ring 4. The ring sizes of these fitness rings are not the same as normal jewelry ring sizes. The kit comes in twelve sizes from 4-15. It’s best to try it an entire 24 hours, through daily activity and sleep, to ensure that the size is appropriate. A few things I made sure of was that I could comfortably make a fist with it on, that it was still easy to remove when my hand was at its most swollen, and that I was comfortable with the finger and hand I picked to wear it on. I chose a size that fits both my right middle and index finger so I can alternate between them. Because the band is wide, it is imperative to not try to force squeeze a ring in because it can get stuck. The ring sizing kit is 100% a must before buying an Oura Ring 4. You want the right size from the start, and no risk of the Oura ring getting stuck or being too loose and falling off. There is also no extra cost because you will get a $10 gift card to use toward the Oura Ring 4 once you’ve chosen a size.

The Oura Ring sizing kit is an absolute necessity before ordering your Oura Ring. The Oura rings fit differently than "traditional" rings. The sizing seems to be consistent from generation to generation -- this is not my first Oura Ring. But, I would still recommend using the sizing kit to ensure you order the right size. In the past, I have used the Oura Ring sizing kit in-store for my previous rings. This was the first time I used their kit mailed to me -- but it's essentially the same experience as in-store. The kit itself is very easy to open and use and includes all the sizes they offer. Don't be scared by the sizing kit! These are just sizing rings and are plastic and fairly flimsy. Your Oura Ring will far surpass your expectations for build quality and weight. Interestingly, the size ring I wear is exactly one size *down* from a traditional jewelry ring. This is why it is so important to utilize the sizing kit to ensure you order the right size for whichever finger you choose to wear your Oura Ring on.

There is no replacement for using one of these kits to ensure you know the exact size of Oura ring you need for your application. The rings are molded and designed to match perfectly in width and internal structure to the Oura Ring 4 so you are certain how it fits and feels. I used mine for over 24 hours and found that my ring size was a match in size to my wedding band (size 9) now that this new generation of Oura ring does not have the annoying bump sensors internally as the old ones did. The ring and the kit size availability are far more comprehensive now. Sizes 4 through 15 are available now; a far broader range than the older models and this provides much more flexibility for potential users seeking to find exactly the right ring size for their needs. The only thing I would say is that I perhaps would have preferred a darker color than bright white so that the test ring wasn't as conspicuous while I was doing my 24-hour size and comfort trial. Otherwise, this kit is an easy 5 out of 5 star recommendation!

The sizing kit for the Oura Ring provides a very simple way to find out what ring size you need for the Oura ring that you will purchase. It consists of 12 white plastic rings on a white piece of packaging. The ring sizes range from 4 through 15. Unlike a jewelry store’s ring gauge set, there are no half sizes. You will need to commit to the closest size that comfortably fits your finger. The instructions ask that you wear one of the plastic rings for 24 hours to make sure that you will be comfortable with your size selection. For me, I ended up going with the larger size as my finger swelled during the day and it became much tighter. It’s important to pick the correct size since the Oura Ring cannot be sized like traditional rings. Unfortunately, it is natural for fingers to swell and shrink due to heat, cold, water retainage, weight loss, etc. You may want to consider what the temperature is currently and allow for some variation due to that. If it’s summer and you pick a ring that’s slightly loose, then it may become more loose in the winter. If your weight fluctuates a lot, then you may want to consider where you typically spend most of your weight range. Just a few things to consider as you use your sizing kit. Overall, I am giving the Oura sizing kit 4 stars. It could be a little better if there were more ring sizes including half sizes.

(TL; DR) – This fit kit is key to enjoying your Oura 4 ring. It’s a pain, yes, but worth the effort, and frankly guessing one’s ring size only to receive a ring that’s ill-fitting is a bigger hassle. When experimenting with sizes confirm it doesn’t spin on your finger, especially when tossing and turning during sleep. The embossed size on the ring mold should always be upright. If you notice it in a different position size down. Finally, before committing to a finger or size observe how the ring feels when doing your routine tasks to ensure it’s the most comfortable finger for your Oura 4. DON’T SKIP THIS KIT Getting a new gadget is always fun, but, especially with the Oura 4, there is homework to complete first. There is no way to sugar coat that auditioning the ring sizes in the Oura 4 Ring Fit Kit is tedious and I loathed the delayed gratification of getting my ring. But getting the right size is necessary for the ring to provide accurate data and enjoyment. It’s like having a new suit tailored vs just wearing it right off the rack. No one enjoys standing for the tailor, but it’s nonsense to go out in unhemmed pants and coat sleeves that extend past the wrist. So, no matter if the Oura Ring 4 is your first Oura or an upgrade, it’s a terrible idea to skip the fit kit and guess your ring size. Oura rings are not sized exactly like jewelry rings and since the Oura 4’s sensors are smaller than previous versions it also fits different than older Oura rings too. KIT CONTENTS The kit consists of ring molds of the 12 available sizes, 4-15 (tiny to ginormous). Doing a proper fitting is simple but time consuming. The molds are almost exact reproductions of actual Oura 4 rings including the sensor bumps to determine a realistic fit. The size of each is stamped on its topside, which is a handy marker to determine it rotates during wear – important since the sensors must rest on the skin at specific points for an accurate reading. MY FIT EXPERIENCE Below I’ll encapsulate my fit experience, but if you want a visual, Oura has a brief “how to” video in the sizing support area of its web site. Being new to Oura my first step was to figure out which hand and finger I wanted to mostly wear the ring on. Oura says the Index finger is best with the middle and ring finger following, then the pinky and thumb. Personally, since this is a health device first, and fashion second, I only considered the top three options: index, middle, and ring fingers. Initially I tried it on my right index finger and liked it there until I picked up a camera and it became uncomfortable with the ring pressing on the camera’s grip (wildlife photography is a hobby). So, I switched to my left index finger, which was fine until I started driving and discovered I couldn’t get a comfortable steering wheel grip. Finally, I found success with the ring on my left middle finger. The lesson here – wearing the mold for 24+ hours as you go about your daily routing will help whittle down the best finger for you. The first finger you try might be fine until you start doing a given activity. Mixed in the finger decision is determining the right size. I thought I could pull off an 11 but when I woke up and the “11” was to the side of my finger rather than on top as it should be, and I knew I needed to size down to 10. So, I started my 24 hours over. It was a little annoying but “haste makes waste,” and all that. Size 10 fit snug in the morning and got snugger as the day wore on and my fingers expanded, especially after a quick run. I wouldn’t wear a jewelry ring this tight but accepted it here since there are no half-sizes and the sensors need to touch the skin. By the end of what became a 48-hour try-on test, after my restart, I actually got used to the ring’s feeling. Fortunately, at least for me, my left middle and index fingers are about the same circumference so if my middle finger does need a break I can put it on the index for a while.

This is a rather simple yet extremely important step in obtaining your smart ring. Initially, I was slightly apprehensive. I had concerns about selecting the correct size and choosing the appropriate finger to wear it on. However, most of these worries were alleviated as soon as I received the sizing kit. Upon opening the package, I promptly scanned the QR code to access the instructional video. The video clearly indicated that it is advisable to wear the ring on any finger except for the pinky and thumb. I decided to find a snug fit for both my middle and pointer fingers. I diligently wore the plastic ring for several days without removing it. I even wore it while sleeping and showering to ensure that it would not cause any discomfort. It is worth noting that the only ring I have ever consistently worn is my wedding band. My intention was to wear the Oura ring on my right hand, and I must admit that it took some time for me to get accustomed to it. Ultimately, I decided to wear the ring on my middle finger. Initially, I attempted to wear it on my pointer finger, but I felt that it interfered with my daily activities, particularly during workouts. I am grateful that I took the time to wear the sizing kit ring for a few days. This experience provided me with the confidence necessary to make an informed decision when selecting the actual ring.

I've been on the fence for some time about wanting a smart/fitness device. I've looked at watches, rings and other devices for some time because they do make sense if you care about your health. Interfacing with your smartphone, they will provide real time data about various health statistics and I would like that when working out or tracking my sleep to try and optimize my health. I finally decided to take the plunge with Oura and their Fitness/Smart ring. This comes in two phases. Ring sizing and then the actual device itself. This is the ring sizing part of the program. The Oura fitness ring is like having an Apple Watch like device but on your finger. Unlike a watch with a sizeable band, a ring is a fixed size so you will need to know your size and for which finger before you can get the appropriate ring. I didn't know what to expect and I half expected to use a tape measure of some sort to guesstimate my ring size but to my delight you receive a small package that has 12 individual plastic rings that attempt to simulate the real ring itself so you can get a feel for what size you need on your preferred finger. I decided I wanted to get one for my ring finger to take the place of my wedding band and after a few quick try on sessions, I settled on size 11. Size 12 fits a tad loose and size 11 fits just a bit snug but I want to make sure the ring I order has good contact for the best readings. This approach makes it so simple and easy to make sure you order the right size ring. A bonus is you can now determine your ring size in general too across all your fingers. For example, I had my wife try the set to see what size she is, and her ring finger is about a slightly snug 7 with this kit and that is close to her actual ring size of 7.25" Great first step for getting the sizing down. Now comes part two, ordering the actual ring itself.

The sizing kit has 12 sizes, which are 12 white plastic rings, from 4 to 15. There are no half sizes. I am new to the Oura ring, so I had some questions, which you may have also. Which hand should I wear this ring on? Through my research, I was able to conclude that it is recommended to wear on your non-dominant hand. Kind of like the way we wear our watch on our non-dominant wrist. But wear it on whichever hand you feel most comfortable with. Which finger do I wear it on? The recommended finger is the pointer finger on your non-dominant hand, but also your middle finger, or whichever finger the ring is more comfortable on, is what I came up with. Personally, I’m right handed, and have sort of stubby, small hands. The ring size I decided on fits my left index finger and my right middle finger. My right index finger was huge compared to my left one, which I thought was really interesting. I wore the plastic ring for an entire day, as is recommended. I thought it was interesting that when I woke up in the morning, my finger was kind of swollen, and it was quite a bit tighter than when I went to bed. So the recommendation to wear the test ring for a bit is a good idea. For me, I couldn’t have gone any larger, and definitely couldn’t go any smaller, so the choice was made based on that. If you have a ring sizing kit from previous Oura rings, it is recommended to not use those, as the Oura ring 4 is slightly different. It is a bit slimmer, so that might make a difference in sizing.

The Oura 4 Ring Sizing Kit is a much needed accessory before purchasing Oura's latest Ring 4. Oura is considered one of, or the top smart Ring manufacturers in the industry. So it made sense obtaining the ring sizing kit before obtaining their latest Smart Ring. The setup is super simple and easy. After opening the kit, there are a total of 12 different ring sizes to choose from. From very small to extremely large. I tried on all the sizes to get a good gauge on which ring option worked the best. Since the Oura Gen4 ring is constructed in a slightly different way then Gen 3, it would be best to try the Ring 4 sizing kit when looking to purchase the Ring Gen4. The sizing kit features all white ring sizes from 4-15 with no half sizes. It is super important to wear the sizing rings for a couple of days since many variables come into play when choosing the correct ring size. Our hands and fingers often change with the climate, and conditions. Oura recommends choosing the index, middle or ring fingers for the best accuracy results when wearing the Ring Gen4. So these are the fingers I used when I tested the sizing rings. The Oura ring sizing kit is a must have accessory if you are looking to purchase the Oura Ring Gen4. It takes all the guess-work out of choosing the right ring size. You cannot go wrong with choosing to purchase this kit before getting the Oura Ring 4.

The Oura Ring 4 sizing kit comes with twelve different ring sizes, from size four through size fifteen. The rings are made of a hard/rigid plastic and they are the exact size and shape of the Oura ring 4 that you will receive. The kit is very simple to use, just try the plastic rings on, until you find one that fits the finger of your choice. And once you’ve found a good fit, be sure to wear it for twenty four hours before you make your decision, to ensure it fits throughout the day, overnight and into the next day. It is important to wear it all day long, while going about your normal daily tasks, including any visit to the gym and sleeping with it on. If you are like me, your hands might swell slightly when working out or in the morning hours, compared to the evening hours. Wearing the sizing ring for a full cycle is important to make sure you order the correct size that will fit you all day, during all activities. Once you have made your choice, you can scan the QR code on the back of the box, visit the Best Buy website, or go into a Best Buy store to order the ring in the size you need. After you have your ring ordered, Oura recommends sharing the sizing kit with a friend or family member who is interested in buying an Oura Ring 4. The Oura Ring 4 sizing kit is pretty straightforward and easy to use. I recommend anyone who is interested in buying the Oura Ring 4, to first get a sizing kit to make sure you get the right size.

I was happy to have the sizing kit. It comes with a ring of every size, so you can test different sizes on different fingers and see how it feels to wear a ring on each finger. I like that it takes the guess work out of the process. It’s nicer than displays that are in stores also. The ones that usually just have a hole for each size right next to one another punched through cardboard. Ultimately I was able to try on all the rings, and they fit how most rings fit if you were in a jewelry store and make a good decision. I have not yet received the ring that I have ordered, so hopefully the sizing kit is an accurate representation of the ring itself. I would definitely use a product like this in the future to avoid having any issues with the final product. I did notice that the rings are a bit challenging to take off if you manage to slide a too small ring onto your finger. I did this more than a couple times and it was a struggle to take off when I did. So be careful to not use a way too small ring to test the size. If it’s really tight around your knuckle, use caution putting it on further.

In order to ensure a good and comfortable smart ring, Oura sells this ring sizing set. The set comes with full sizes from size 4 to size 15. There are no half sizes, only full sizes. They say for optimal accuracy to find a snug comfortable fit on the finger of your choice. I selected the size 9 for my right ring finger. It is relatively snug and most of the time I can remove it without too much trouble. For me size 10 would easily just slide on and off. I would be afraid that size would have been too big and possibly fallen off. Especially in the winter when wearing gloves and your fingers might be a bit smaller. They recommend that you wear the ring for 24 hours. I did wear it a couple days and noticed that sometimes it is a bit tighter and sometimes it is a bit looser. I would definitely recommend wearing it a day or two to ensure that you are happy with the size and it doesn’t feel like it will fall off. I think the kit is a great way to kind of try before you buy. It did feel a bit strange at first but I got used to it.

The Oura Sizing Kit for Oura Ring 4 is necessary if you are going to get the ring. Simple, easy purchase to ensure your ring will fit you correctly and comfortably without any guessing. It's really just a simple kit with different sized plastic feeling rings that you slip onto whichever finger you plan on wearing your Oura Ring 4 on. They say the first, or pointer finger is the one that is optimal for the ring so I played around with the different sizes till I found which one I felt fit me best. Then I wore it all day to make sure I could see myself wearing it long term - and I could! I appreciate that they've made this kit and it's easily available. I feel like it's a necessary piece to owning an Oura Ring 4 to ensure you get the most accurate information or readings from your new ring. If you are thinking about getting the Oura Ring 4 I think this is well worth the money to make sure you get the right fit. It's a simple measuring tool to optimize your experience with this exciting new technology.

This is a great tool for ensuring that the Oura Ring will fit as it is supposed to fit. I received a box containing 12 plastic rings of varying sizes from sizes 4 to 15. Because I already wear two rings on both my ring fingers, I had to first choose on which finger I would wear the Oura ring. I followed one of their recommendations. I started by trying on the larger one, planning to work my way down in size to the smaller rings. I stopped at the first one, size 15. This does not exactly correspond to my ring size as measured by my jeweler for that finger, so it is important to use this Oura kit and not rely on any the form of previous measurement. The instructions said to make sure to make a fist and wear the ring while performing different activities for a day to ensure it will fit correctly. I wore the plastic ring for 24 hours before deciding that it was indeed the correct size. I was then able to select my ring size and finish for the actual ring. The real test for me would be when the actual ring arrived and whether it would fit as the plastic sample did and I can say that it did. I recommend that anyone considering an Oura ring use this fitting tool as per the instructions.