Oura Ring Gen3 Sizing Kit - Size Before You Buy The Oura Ring Gen3 - Unique Sizing - Receive Credit for Purchase
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Availability:
Only 3 left in stock, order soon!
Arrives
Wednesday, Aug 6
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Style: Sizing Kit
Color: White
Size: Sizing Kit
Features
- NOT STANDARD SIZING Oura Ring Gen3 Sizing Kit only works to size for Oura Ring Gen3. Gen3 sizes are different from standard ring sizes. Oura Ring Gen3 is available in sizes 6-13. There are no half sizes.
- HOW IT SHOULD FIT - We recommend wearing your ring sizer for at least 24 hours to confirm your best fit. Oura Ring Gen3 should fit securely and comfortably at the base of your finger. Your ring should not rotate as you go about normal daily tasks.
- COMFORT AND ACCURACY A properly fitting Oura Ring Gen3 will result in the highest data accuracy, comfort, and overall experience
- CHOOSE A FINGER Oura Ring Gen3 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring Gen3 on your index finger. Size the exact finger you plan to wear your Oura Ring Gen3 on
Description
The Oura Ring Gen3 Sizing Kit allows for you and those around you to find the ideal fit before purchasing. With an Oura Ring Gen3 sizing kit purchase, receive 10 Amazon credit towards the future purchase of an Oura Ring Gen3 (terms and conditions apply). A properly fitting Oura Ring Gen3 will result in the highest possible data accuracy, comfort, and overall experience. Oura Ring Gen3 sizes are different from standard ring sizes, so it is important to size yourself using our tools and to follow our sizing instructions. Oura Ring Gen3 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring Gen3 on your index finger.
Package Dimensions: 6.34 x 5.67 x 1.46 inches
Item Weight: 4.2 ounces
Item model number: JZ98-54794
Other display features: Wireless
Color: White
Whats in the box: Oura Ring Sizing Kit
Manufacturer: Oura
Country of Origin: China
Date First Available: June 1, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Aug 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I want to start out by saying that this in no way is a fitness tracker, if you are into fitness in any way and have an Apple Watch continue to use your Apple Watch. If you are curious about your sleep, stress, your period cycle I would say this is a good purchase, and get the ring sizing kit. Also make sure you check with your insurance provider — they might just cover this. 1. Sleep- this really goes into detail about how much lite, deep, and REM sleep, this also calculates how long it takes you to fall asleep, your movements throughout the night, a part of this calculates your readiness (will talk about that at the end) 2. Live Heart Rate - this along with the “daytime stress feature (will do into that on 3), you can actually monitor your heart rate and do a “live” heart rate and actually feel the beats per minute, it calculates your HR in 30 minute increments. This will measure your HR at night (and it kinda calls you out if you have an elevated HR from drinking alcohol) 3. Daytime stress - the app/ ring is able to calculate your HR based on stress (this will take a couple of weeks to figure out). It tells me when I’m in relaxed, engaged and stress stage, and the restored stage (how long it will take you to recover from being stressed) this has really been helpful for me especially since working from home. This plays into your Rediness score. 4. Cycle Insights / Natural cycle- Ladies this one is for you if you are looking to come off hormonal birth control and/or looking to start a family or if you’re honestly just curious. I will say the more data that you provide the app on your last 6 periods the better it has predicting (but no worries if you don’t know it) will talk about the natural cycles app in a few. This will take your body temperature every day and create a graph, when you download the natural cycles app (which btw pairs wonderfully with the Oura ring) every morning you will open up the Oura ring app and allow everything to sync then it will transfer that data to your natural cycles app. There you will have Green Day’s ( your safe days for s*x), and red days when it’s not safe (unless looking to start a family I’m sure yours will be very different from mine). This will predict days of ovulation based on your body temp. And your est. next cycle. You will then fill out this form it will ask you if you’ve had s*x, bleeding (for period), LH test, ovulation symptoms and your overall “how are you feeling”. The more information you give the app the better. 5. Your Readiness Score - basically everything I talked about sleep, HR, temperature, “activity” even though I don’t use it. I put my Apple Watch information into it” your stress, this calculates everything and gives you a readiness score to take on your day. It may give you advice to relax, call you out on your drinking “hey your HR was elevated did you consume alcohol or have a late light snack” sometimes it can tell you that you might be coming down with something, or that you can take the day on. I will say there are CONS— it’s a wellness ring, not a fitness ring. The app…… it’s $5.99 a month… for a ring that you pay $350 based on the ring and finish. Kind of annoying. This does scuff pretty easy (so if you wear this while working out get a ring protector). However the Pro’s outweigh the cons…. I’m able to learn a lot about my sleep I’ve got some PTSD/ insomnia from the military. I’ve been able to learn a lot about my stress and period tracking. I think this was very much worth the purchase (I did hold off for a year).
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Reviewed in the United States on April 8, 2024 by Cierra Jule Cierra Jule
I have had my ring now for 10 months. I wear it every day, have bought the oura and natural cycling app and this is my review. I have the rose gold one as it matched my wedding set, it does have scratches in it but nothing noticeable, and the rose gold hasn’t worn at all. The oura app is nice to see my sleep and stress but I don’t really work out so I don’t think I’ll get the app again. The natural cycling app is really nice. After giving birth I got it for natural birth control and I got my period 5 months pp. I’m now almost 9 months and it’s pretty accurate as far as symptoms it suggests, days and flow of period and it has helped me understand the different phases. The ring isn’t bulky, and after the first day you don’t notice it’s even there. I got it sized to my pointer finger in the summer, so in the winter when my fingers are smaller I can put it on my middle finger and it’s not loose at all. Highly recommend.
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Reviewed in the United States on May 18, 2025 by Lynzeller
Style: Horizon
Color: Rose Gold
Size: 8
Love, love, love it. (Gen3, rose gold) Never got into the watches and such, but appreciate the basic information about sleep, activity, etc.However, it has more than just that - Aura shares sleep study info that you can dive into and get more info as well as other insights. As it say, try it for the 24 hrs- I tried it on 3 fingers until I found the right one where I don't feel it or it interferes. It does go at least 4-5 days without a charge. And never have a connection issue with my pixel. I have had the rose gold for over 6 months and it still looks great. I did buy protectors and will put them on, just in case. The only down side I have found is that I read every night and it doesn't like my "latency"- ie the time it takes for me to fall asleep. It dings my sleep score each night. :(
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Reviewed in the United States on April 27, 2025 by DR
I previously ordered a size 8 after using the ring sizer, however had to return it and order a size larger. I don’t know if it’s the sizer or the actual ring that is off. The 9 fits beautifully and I really love this ring. 4 stars because of the sizing issue, the ring gets 5 stars!
Reviewed in the United States on June 7, 2025 by c
Style: Heritage
Color: Silver
Size: 11
I got a used ring from someone to see if I was ready to commit to it, and 2 years later, I handed it down to my daughter and bought myself a new one. I prefer this style to the horizon (complete round), because I like the aesthetics of the flat top, and it makes for easy checking at night if the ring turns to make sure the flat side is on top. I'd give up my Apple Watch in a heartbeat for my Oura ring, if I had to choose between them.
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Reviewed in the United States on May 19, 2025 by Jeanna
I love all the functionality of it and they keep adding features. The design is sleek and stylish and it goes with all outfits unlike Apple Watch also unlike Apple Watch it is not just another screen to look at. App subscription fee is very reasonable too. I never had any issues with connection, charging or anything. If I could give more than 5 starts I would. I am a huge fan
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Reviewed in the United States on May 22, 2025 by Viktoryia Viktoryia
Style: Heritage
Color: Black
Size: 8
Originally bought this exact model color and size in January of 2022. worked great for 3.4 years before it kicked the bucket even after trying all the reset hacks. (i wore it daily the whole time). Didn’t want to spend 349 for gen4 as i was very happy with this model but it is no longer on sale on the oura website. Luckily I found it here for 199. that’s a no can beat deal. Received it overnight and now i’m back and running. i may even wait for them to drop lower and buy another one for when this little guy poops out in the next 3 or 4 years. A**** buy.
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Reviewed in the United States on May 4, 2025 by Teri
Style: Horizon
Color: Brushed Titanium
Size: 8
I enjoy seeing my trends. I appreciate that I can wear it in the shower and pool. The extended pieces help keep the ring in place. I like reminders to move for when I sit at my office desk too long. Easy to maintain. Holds a charge well. My only complaint is that the step counter is inconsistent. And if I enter a walk the ring missed, it doesn't attribute an appropriate number of steps, which throws off the accuracy of my goals.
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Reviewed in the United States on May 5, 2025 by Jodie