No images found
Buy Now, Pay Later
As low as
$2
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Tuesday, Apr 21
This product has no description
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Apr 21
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
![SAMSUNG Galaxy Ring, AI Smart Ring, Size First w/Sizing Kit, No App Subscription, Fitness Monitor, Sleep Tracker, Up to 7-Day Battery, Size 13, Titanium Black [US Version, 1Yr Manufacturer Warranty]](https://m.media-amazon.com/images/I/71yKqHvtBsL._AC_US500_.jpg)
![SAMSUNG Galaxy Ring, AI Smart Ring, Size First w/Sizing Kit, No App Subscription, Fitness Monitor, Sleep Tracker, Up to 7-Day Battery, Size 13, Titanium Gold [US Version, 1Yr Manufacturer Warranty]](https://m.media-amazon.com/images/I/71aywgXEKlL._AC_US500_.jpg)
Top Amazon Reviews
works great for not much money. it came really quickly and I was able to size myself for an oura ring from the comfort of my home. Now I can share the sizing kit with my family and friends versus them buying their own
Reviewed in the United States on February 12, 2026 by Carrie Whitehouse
Very helpful for deciding which finger I wanted to use for my Oura ring. Using the rings on different fingers for a few days allowed me to purchase my ring with confidence.
Reviewed in the United States on February 6, 2026 by Kristi Parenti-Kurttila
Kit worked well for getting my wife the correct size Oura Ring
Reviewed in the United States on January 27, 2026 by C Ray
Me ayudó mucho para saber la talla de mi oura antes de pedirlo. Sobretodo porque vivo fuera de US y era muy difícil el tema de envíos, no me podía equivocar con la talla
Reviewed in the United States on November 18, 2025 by Juanita
Not much to say, arrived quickly, letting me determine my size for my upgrade from Gen3 to Gen4. For me, the fit is similar. But since I’m going to change the finger and hand for my Gen4, I needed to resize.
Reviewed in the United States on October 19, 2025 by Missouri Shopper
These rings helped me determine the right size was right for me!
Reviewed in the United States on October 26, 2025 by AAG
Exactly as described. Was able to size my Oura ring perfectly.
Reviewed in the United States on September 23, 2025 by LRL
This sizing kit worked perfectly for me. The sizes were very accurate and matched my actual Oura ring size exactly. It was easy to try on the different options and figure out which one would fit best before ordering the real ring. The kit is well made and feels durable enough to use multiple times if needed. It saved me from guessing and potentially ordering the wrong size. I definitely recommend this to anyone buying an Oura ring.
...
show more
Reviewed in the United States on August 6, 2025 by Amazon Customer