Customer Ratings & Reviews

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

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.

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.

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!

Super helpful little kit, I figured out my size in minutes. Glad I tried the sizer first because my final ring fits perfectly

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.

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.

easy to use, made trying the rings on super clean and gave me a good feel for the size of the rings! also they give you a 10$ giftcard so you dont have to return them

Perfect fit for using it with sizing any ring especially the smart ring

I love the ring sizing kit it allowed me to find the most comfortable fit for my Oura ring 4 purchase. It was also really easy to use and the customer service rep that I bought it with answered all the questions I had it was over all a great experience

Nice product and looks cool. Comes with all the sizes so the fit will for sure be perfect. Price is unbeatable. Very satisfied!

Really nice product that makes ring buying easier. It's essentially free since you get a gift card for the same amount toward your Oura purchase. Nice comfortable rings to wear overnight or a few days and get a good idea of what the actual ring will feel like. I read that you should pick a size that isn't painful to take off right when you wake up. I was between sizes and considering going down, but I'm glad I went with the larger size based on the morning test. Fit well and would have regretted the other.

Gotta say a must have before getting a oura ring. Has all the sizes to try on.

The Oura Ring 4 ring sizing kit is super helpful and easy to use. The instructions were clear, and the variety of sizes included ensured we could find the perfect fit. It’s lightweight and comfortable to wear for a day or two, which helped us confirm the right size before ordering the actual ring. Overall, it’s a great tool to make sure the Oura Ring fits perfectly when it arrives. Highly recommend using it to avoid any guesswork!

Definitely recommend the Oura sizing kit. It helped me know for sure what size I will need to order when purchasing the Oura ring. Your fingers can swell at different points of the day and you want to make sure you are getting the correct size for a ring that you wear all day every day.

Worked well to find right size. Have now had my oura for months and haven’t had to adjust finger for it

Perfect for Ring Size for Oura. Comes with a free card. =

Is exactly what it says it is, and helped me figure out the right ring size for an Oura.

Definitely helps with sizing on orders. Helps not to have to deal with returns.