Customer Ratings & Reviews

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.

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.

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.

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.

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 is very helpful to know what your ring size should be. My fingers swell up throughout the day and while a size fits in the store, I realized I needed one size up for it not get stuck.

I want a ring for Xmas. I got the sizing kit both for size and to determine if I could wear 24/7. I wore to for a week and it felt good. So I got the ring for Xmas. If you are thinking about the ring get the kit first both for size and to see if you can wear it for a week.

I am liking the ring so far. It is providing insight to certain biometrics that I'm currently focused on. The ring sizing kit apparently is not necesary at Best Buy despite what I found online. They have a sizing kit in store. As for the sizing, it matches my actual ring and is a great fit.

The Oura Ring sizing kit was super helpful in finding the perfect fit. Made the whole process easy and ensured I got the right size. Highly recommended!

Definitely get the sizer first!!! Used it for a couple hours before buying the ring lol but was definitely worth it and they reimbursed me the 10$

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!

Very helpful in helping to pick my right ring size and the price came off the ring when I bought the ring. A no brainer buy

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.

I would highly recommend getting a set of these before purchasing the ring itself. They were helpful in knowing figuring out which finger I was going to wear my ring on and the correct size to purchase.

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.

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.

This was great with figuring out what oura ring size I would need.