










📏 Nail your perfect fit before you commit!
The Oura Ring 4 Sizing Kit is a precision tool designed to help you find the ideal ring size for optimal comfort and sensor accuracy. Lightweight at just 0.55g, it fits any finger and comes with a £10 credit towards your Oura Ring 4 purchase, ensuring a confident, risk-free buy.











| ASIN | B0DWFSW47F |
| Best Sellers Rank | 187 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Wearable Tech Rings |
| Colour | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (829) |
| Date First Available | 1 Mar. 2025 |
| GPS | No GPS |
| Item Weight | 0.55 g |
| Item model number | JZ98-54867 |
| Other display features | Wireless |
| Product Dimensions | 14 x 14 x 2.5 cm; 0.55 g |
| What’s in the box | Oura Ring 4 Sizing Kit |
C**R
I'ts Always Good To Try Before You Buy!
Nice to use at your leisure and get used to, get the best comfy fit as the ring is wider than a normal ring. Good ring sizer all round, I got it on sale so good value for money.
D**D
Nice kit
Very nice ring sizing kit and the price came off the ring with no problems
D**W
Does as says on the tin
As says on the tin - great for two people wanting to get oura rings saved us a trip to the store. A little extortionate on the value for money for a simple ring sizer pack however i guess saves money on purchasing the wrong size which would be worse. Great for identifying comfort level and ease of use for potentially purchasing (which I opted out of post this purchase)
A**N
Perfect Fit, First Time: Oura Ring 4 Sizing Kit Review
The Oura Ring 4 Sizing Kit is an essential first step for anyone considering this innovative smart ring. It takes the guesswork out of finding your perfect fit, ensuring a comfortable and accurate wearing experience. Key Features: Comprehensive Sizing: The kit includes a wide range of sizes to accommodate various finger shapes and sizes. Easy-to-Use: Clear instructions and a simple sizing method make it easy to determine your correct ring size. Unique Sizing Classification: Oura's unique sizing system ensures a precise fit specifically for their smart rings. Purchase Credit: The cost of the sizing kit is credited towards your Oura Ring 4 purchase, making it a worthwhile investment. Well-Packaged: The kit arrived well-packaged and organised, making it easy to find the right size. Overall: The Oura Ring 4 Sizing Kit provides a seamless and accurate way to find your perfect ring size. It's a must-have for anyone considering purchasing an Oura Ring, ensuring a comfortable and enjoyable experience from the start.
D**R
BEWARE - size for Oura 4 is different to Oura 3
Don’t risk guessing your size - I have used an Oura Ring 3 for over 3 years now and decided to upgrade. My Oura 3 size is a size 13, the Oura Ring 4 sizing kit showed I needed a size 12 for this ring, the fit is different. I purchased the Oura ring 4 in size 12 and it fits perfectly and very comfortable. Also this kit was £5 and gave me a £10 discount on the ring so a no brainer. Don’t risk getting the wrong size, get the kit and wear the plastic blank for 24hours - you can then be confident of the right size.
P**P
Fantastic for people who have small enough fingers for an Oura ring
I have a few wearables that I've used for sleep monitoring, and thought that the Oura might help as it does extra monitoring that my watch/band doesn't do.... the problem is that for people with larger fingers (like myself) can't wear them Knowing I have larger fingers I went straight to the size 15, the largest size in the package and the largest that Samsung make, but on my right (dominant) hand it barely gets past the 2nd knuckle, and on my left hand it JUST fits below the knuckle so I can "sort of" bend the finger, but it's far from comfortable It's meant to fit on the first 2 fingers, and since there's no way it's fitting on the middle fingers, it stops both fingers from bending with it sitting smack in the middle of the knuckle - the only finger it "sort of" fits on is my left ring finger, but then it's only wearable for about 15-20 minutes before it begins to get uncomfortable and I've got to take it off, so there's no chance of me wearing it overnight, let alone all day Maybe if they make larger rings it will be worth it, but I can't buy one because my fingers are just too chonky for their sizes
A**S
Get the ring sizing kit if you’re getting an Oura ring.
If you’re thinking of buying an Oura ring get one of these sizing kits. It lets you wear the different ring sizes on different fingers to test the fit in normal day use. Particularly if your fingers swell a bit in the heat this will really help you figure out the right size. You also get the price back against the purchase of one of the rings. Why did you choose this product over others?: It’s an original Oura product and therefore knew it would be correct sizes.
C**K
Good product.
Good handy kit and gets you money off the ring anyway can't go wrong.
A**K
Duurde lang voordat het aankwam en en geen 10 euro bon gekregen voor het kopen van de oura ring 4.
J**A
El tallaje de los moldes es literal al anillo, por lo cual revisar bien ya que no existe diferencia en el diámetro anillo en sí con respecto al molde.
V**S
Molto utile per misurare il diametro e la vestibilità sul dito. Il problema è che il dispositivo che si dovrebbe acquistare dopo la misurazione non è utile per rilevare la pressione sanguigna
B**1
Parfait pour trouver la bonne taille de bague Un conseil : Garder là au moins une journée
R**T
Zestaw rozmiarów przyszedł terminowo, ale nie została uwzględniona bonifikata, dlatego ocena 1.
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