Customer Ratings & Reviews

When purchasing an Oura ring, you first must provide your ring size. If you're like me, you don't know offhand what your ring size is. Even if you think you know it, it's always beneficial to get measured to make sure your new Oura ring fits appropriately. The sizing kit is quite simple. It's a small box that comes with 12 different size plastic rings. These rings range in size from 4 to 15. The plastic rings are attached to a 3x4 placard. You simply take the sizes off and try them on. You want to make sure it fits snugly, but not too much. Obviously it depends on what finger you want to wear your ring on. Nothing in the sizing kit indicates whether any finger is better than the other (i.e. ring finger vs. pointer). Given this lack of information, and the fact that promotional materials show people wearing the Oura ring on different fingers, I took it as safe to assume that it doesn't matter which finger you wear it on. There's little information in the kit itself, and that's probably because there doesn't need to be. They simply recommend that you wear the appropriate size ring for 24 hours to ensure comfort. You do want to make sure that the size is ok given that your finger size can swell depending on your health and what you're doing. Once you've worn the appropriate ring for 24 hours and are happy with the fit (the plastic rings are the approximate thickness of the Oura ring, which to me, is slightly thicker (but too much) than my wedding band) then you simple take it back to the Best Buy store where you made your purchase to pick out the color and size that you prefer. Bottomline, it's extremely simple, only downside is that it does require two trips to the store (or one, depending if you order it online). But to me, that's worth it to make sure you get the appropriate size. And I highly recommend you wear it for the full 24 hours.

This kit was definitely worth getting. It was exact to the ring I purchased. As for finger selection, here is my two sense: if you have one of the fitness watches, think about the ring in the other hand. If you select the middle or ring finger, you need to consider hand shakes because your fingers would get squeezed and it could hurt. Oura suggests the index finger and that seems to be the best option based on how long I’ve had my ring so far.

The sizing kit that Best Buy and Ōura offer is simple in design, but effective in purpose. The kit consists of a card holding 12 different white plastic sizing rings in whole sizes 4 through 15. There are no half sizes. The rings are well marked with the size. The included instructions are printed on the back of the box, so you know exactly what you are getting in its entirety before buying. The $10 charge for the kit is refunded as a credit when you choose an Ōura ring to purchase. The sizing rings are designed to mimic the actual Ōura ring in size and exact shape, but since they are plastic, the weight is not duplicated. The kit states to wear the sizing ring of choice for a 24 hour period. Your fingers will slightly vary in size during the day. I also went for a long walk wearing the sizer. It appears that the Ōura ring can be worn on any finger of either hand as the instructions state to wear a sizing ring on the "finger of your choice". I highly recommend using the sizing kit and not ordering an Ōura ring size based on what size your other rings are even if you bought a new piece of jewelry recently. The sizing rings will give you a precise "feel" for the actual product, considering that the Ōura is probably thicker and wider than most jewelry, especially women's rings.

nice quality ring and accurate information. easy to wear

I’ve been using the Oura Ring 4 in Stealth, and I really like it. The design is sleek and discreet, the Stealth finish looks great, and it’s super comfortable to wear daily. Tracking feels accurate, and the app gives useful insights without being overwhelming. Overall, I’m glad I went with the Stealth—it’s stylish and fits my lifestyle perfectly.

This was very helpful in figuring out my size for my Oura ring 4. It also comes with a $10 gift card, so it’s basically free! These were comfortable to wear and a great product!

I know some people go in the store and just try it on, but I think that trying it overnight is the best option. I tried it while visiting my parents because it gets up to 110 visiting them, and I do it on a regular basis. The size nine got stuck on my fingers during a hike that got to 105 degrees. The size ten worked better for me, I could use it on multiple fingers.

With the sizing kit, I was able to wear the ring for a couple of days to make sure it was the proper fit before ordering my ring. When the ring arrived, it felt exactly the same as the sizing kit. I have passed the sizing kit on to someone else looking to get a ring.

Great to be able to buy this and find your proper ring size instead of purchasing the wrong ring and having to go through the replacement process.

Super helpful since my ring size was a bit different compared to previous versions

Makes ring buying mistake free. Easy to gauge what size of Oura ring you need!

These sample rings allowed me to try different sizes on and go through a day of activities to get a sense of the perfect size for me.

Ring Size Kit is perfect for finding your correct size before buying an actual Oura Ring. Rings are Plastic. After you find your size, share the kit with a friend or family member instead of throwing it away.

The Oura Ring Sizing worked great helping me find the best fit for the Oura Ring.

If you're hunting for your next health-tracking Oura Ring, I highly recommend ordering this Sizing Kit first. ​Do not rely on your regular ring size or the sizing from older Oura Ring versions, as the fit has changed slightly. While you can return the final ring if it doesn't fit, think of the hassle: waiting for a refund, reordering, and the delay in starting your tracking. ​Save yourself the trouble and ensure a perfect fit the first time by using the kit. It’s the easiest way to guarantee a seamless Oura experience.

It helped me determine the proper size for my smart ring, which I purchased separately and absolutely love.

I wasn’t completely convinced about the value of buying a ring sizer kit, but I wasn't ready to commit to purchasing an actual ring. So, I decided to buy the kit instead, and I’m really glad I did. I tried out different sizes for about two weeks, which ultimately helped me choose a ring size that I probably wouldn't have selected without trying on various options.

This worked great. Not much to review, but this gave me an opportunity to "wear" the ring and see how it would feel dimensionally.

Great product to use when sizing your finger to fit the ring

My son wanted the Oura ring for Christmas and told me what size he was. I purchased the sizing kit to make sure, and he was wrong! I had him wear the ring from the sizing kit for the day and I am happy he did as he went down one size from the original size he asked for. Plus, it's FREE!! You get a Best Buy gift card for anything in the store. It's a win-win for sure!