Ring 4 Sizing Kit - Size Before You Buy

This sizing kit made choosing the right Oura Ring size easy and stress-free. The sample rings are comfortable to wear and helped me find the perfect fit before placing my order. I highly recommend wearing the test size for at least a full day and overnight since finger size can change throughout the day. It saved me from ordering the wrong size and made the whole process much easier. Definitely worth it if you’re planning to buy an Oura Ring.

This little sizing kit works great. Was able to get the correct size. I decided to wear the size I wanted from the kit for a few days to make sure it fit well when my hands changed throughout the day. When I finally purchased my Oura ring I had the perfect size. No issues at all.

If you’re planning to buy the Oura Ring 4, this sizing kit is almost essential. Here’s my straight-talk review: What I liked: The sizing kit gives you multiple trial rings (sizes 4-15) to test your finger and fit. Best Buy +2 Android Authority +2 It helps you understand that Oura’s ring sizing doesn't match standard ring sizes — many users found they needed a different size than their usual jewelry ring. The fit matters a lot: the company says a proper fit leads to better comfort and data accuracy. You typically receive a credit toward your actual ring purchase, so the sizing kit effectively reduces risk. One small caveat: The sizing rings are made of plastic and feel different than the actual titanium ring. Some people notice differences in how the plastic kit fits versus the final product. You’ll need to wear the sizing ring for at least 24 hours (and ideally through normal daily activities) to check comfort, swelling, finger variation. Bottom line: If you’re buying the Oura Ring 4, get the sizing kit first. It takes away a lot of guesswork and prevents the hassle of ordering a ring that’s too loose or too tight. Measure your finger, test it over a day or two, pick the best fit — then buy the actual ring. This way your investment pays off and you get the full benefit of the ring.

I was hesitant to buy this because I worried it would be complicated to apply the discount from buying the sizing kit to the ring, but it was completely automatic (I bought both through Amazon so I can't say it is the same anywhere else, but on Amazon it was automatically applied to my checkout)! I didn't have to do anything. The sizing kit works great! It came in a box with several different sizes from very small to very large (size 4 - size 15). The size you are wearing is on each band so you won't forget which size you are wearing. The size number raises up, as part of the same material of the ring, meaning it cannot fade off, and you will always know which size each ring is. I found the most comfortable fit and wore it for a few days to make sure it was snug but not uncomfortable. The ideal fingers for the Oura ring are the pointer, middle, or ring finger. If you are prone to swelling you could size it to your ring or pointer and if you have swelling, move it to your middle finger. It is good to buy the kit to be sure, but I will say that the size I bought is also my ring size. I am still happy I bought the sizing kit and didn't risk having to do a return if it were different (and it can be), and it didn't cost me anything once I bought the ring. If you know you want the Oura ring, don't hesitate to buy the kit, as you will get your money back when you buy the ring, and it will save you the hassle of a return. My daughter ended up taking the smaller rings and decorating them, so we got some use out of the extra rings, as well!

Before you buy the Oura Ring 4 definitely order the sizing kit first. Oura Ring 4 uses unique sizing that is not the same as standard ring sizes, and it can be very different from the size you normally wear. The sizing kit lets you test the fit for 24 hours to make sure the ring stays comfortable while providing accurate health tracking. I’m glad I sized before buying because my Oura size was different than my regular ring size. Highly recommended!

NO REFUND OPTION: I bought this sizing kit because I thought I was going to purchase an Oura Ring. However, after it arrived, my sister-in-law was visiting and told me she had bought an Oura Ring and did not like it or find it useful. She felt it was a waste of money for her, so I decided not to go forward with buying the ring. I never even opened the package, but then I found out the sizing kit could not be returned. That means the money was basically just thrown away. It was not clear to me when I purchased it that all sales were final. If you are not 100% sure you are going to buy the Oura Ring, I would not recommend buying this sizing kit.

Within the 6 months of having this ring I’ve noticed that scratches have only really appeared where I hit my finger against my computer mouse at work. The rest of the ring looks great! I have some sleep and health issues so this tracking has immensely helped me find out what I need to adjust. Based on your sleep score, temperature, and heart rate, the app will let you know if something is going on - especially illnesses. It’ll let you know something minor is straining your body when you are going to be sick the following day, then show major signs when you’re actually sick, which gives great peace of mind. I also started a new medication and my general scores lately, along with other factors, have shown that I need to revisit this medication choice. I’ve also really enjoyed the cycle tracking while being off of birth control, this along with ovulation testing has been the best hormone free birth control. This has been the most accurate tracking and prediction I’ve had, in comparison to Flo and Stardust. These rings are amazing if you’re looking to have some motivation for activity, cycle tracking, sleep monitoring, and general peace of mind.

Was exactly what I needed to identify which size oura ring I would need.

後で判明したがアマゾンとその他で1000円近く値段が違う。類似の商品にも出て来なかった。 ２４時間装着とあったので着けて寝たら、かぶれでしまった。本商品とは素材が違うが、高いので怖くて買えない

Todo excelente

Ring size kit was perfect for figuring out my Oura ring size.

Perfect service

Very quick delivery and the product is perfect as expected. Very affordable and useful