Oura Ring 4 sizes are slightly different from standard ring sizes, so it is important to size yourself using our tools and to follow our sizing instructions. The Oura Ring 4 Sizing Kit allows for you, and those around you, to find the ideal fit before purchasing. You can also size yourself in stores where there is an Oura Ring 4 display. A properly fitting Oura Ring will result in the highest possible data accuracy, comfort, and overall experience.
Q: Can I wear the Oura Ring on any finger?
A: Yes, the Oura Ring can be worn on any finger and either hand.
Q: How should the Oura Ring fit?
A: The Oura Ring should fit snug around the base of your finger, but not too tight that it's uncomfortable.
Q: What are the sizing rings made of?
A: The sizing rings are made of plastic.
Q: How long should I wear the sizing ring?
A: It is recommended to wear the sizing ring for 24 hours to confirm your best fit.
Q: Does the sizing kit come with any additional benefits?
A: Yes, you will receive a $10 Best Buy gift card with the purchase of the sizing kit, which can be used towards the purchase of an Oura Ring 4.
Q: Why is it important to find the right size?
A: A properly fitting ring will result in the highest possible data accuracy, comfort, and overall experience.
Q: What sizes are available for the Oura Ring 4?
A: The Oura Ring 4 is available in sizes 4-15.
Q: Can two people use one sizing kit?
A: undefined

Oura Ring 4 sizes are slightly different from standard ring sizes, so it is important to size yourself using our tools and to follow our sizing instructions. The Oura Ring 4 Sizing Kit allows for you, and those around you, to find the ideal fit before purchasing. You can also size yourself in stores where there is an Oura Ring 4 display. A properly fitting Oura Ring will result in the highest possible data accuracy, comfort, and overall experience.

Oura Ring 4 Ceramic is a modern expression of our revolutionary smart ring technology that blends refined elegance with everyday durability. The high-performance ceramic exterior is designed to keep up with you and all that you do. The Ceramic Collection is available in four unique colors: Midnight, Petal, Tide and Cloud. Each new color is built to accent your style and personality. This colorful new take comes with the same cutting-edge technology of Oura Ring 4. Track over 50 health metrics and get personalized insights into your sleep, activity, readiness, stress, heart health, metabolic health, women's health and more. It is built around a breakthrough sensing technology, Smart Sensing, which adapts to your finger to deliver accurate, continuous data. With 5-8 days of battery life, you'll see a complete picture of your health. It's designed with recessed sensors on the interior, making it comfortable and gentle, even on sensitive skin. Oura Ring 4 Ceramic comes in sizes 4-15 and four stunning finishes to fit your style and your finger, effortlessly. Keep your Oura Ring 4 Ceramic looking like new with the Ceramic Polishing Pad. Once you activate your Oura Ring 4 Ceramic, you’ll receive an in-app message and email with instructions to redeem your free Ceramic Polishing Pad. Due to the hardness of the zirconia ceramic, it can take on the color of softer metals, like a dumbbell or cookware. Over time, you may notice grey marks on your Oura Ring 4 Ceramic. Rest assured, it's not damaged — it's evidence of a metal transfer and easy to remove with proper cleaning. Use caution when handling metal objects and consider removing your Oura Ring for some activities. The Oura Ring 4 Ceramic Polishing Pad is your partner in keeping your ring in top condition.

Oura Ring 4 brings you closer to what matters most — your health. With an updated all-titanium design, this smart ring features Smart Sensing, a new sensing platform that doesn’t just measure your biometrics but also adapts to you. It provides insights into over 50 biometrics including sleep, readiness, activity, heart health, stress, metabolic health and women’s health.

Finding your Galaxy Ring size is a breeze with our Galaxy Ring Sizing Kit. Simply select your best fit from a variety of sizing options and receive a $10 Best Buy Gift Card towards your future Galaxy Ring purchase.
| Pros for Oura - Ring 4 Sizing Kit - Size Before You Buy the OR4 - Unique Sizing - Receive Credit for Purchase - White - (2024) | |||
|---|---|---|---|
| Sizing Accuracy, Comfort, Build Quality, Weight | Sleep Tracking, Battery Life, Comfort, Build Quality, Color | Sleep Tracking, Comfort, Battery Life, Overall Performance, Data Accuracy | Sizing Accuracy, Comfort, Design, Usefulness, Fit |
| Cons for Oura - Ring 4 Sizing Kit - Size Before You Buy the OR4 - Unique Sizing - Receive Credit for Purchase - White - (2024) | |||
| There were no cons for this product— | Thickness | Size, Scratch Resistance, Connectivity | There were no cons for this product— |
Customers have good things to say about the Ring 4 Sizing Kit, particularly regarding its sizing accuracy, ensuring a perfect fit for the final ring. Users also appreciate the comfort of the sizing rings and note that they have the same weight as the final product. Furthermore, some customers feel the build quality of the Oura Ring will surpass expectations.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
This is a must before purchasing the oura ring. Wearing different size rings during the day and overnight makes you aware of how your fingers may swell from time to time. Really helps to identify which fingers the oura ring fits on the best. I also took a ring that was well fitting and placed it on one of the sizes, to assist with my decision.
Posted by Kenn
Definitely needed and worth it before purchasing! I winged it and bought my normal size at first then had to return it and buy a sizing kit... They give you a $10 gift card to put towards the purchase of the ring (or anything in the store).
Posted by Gamergal
I love the. Aura ring it’s perfect and gentle on hands
Posted by GaryF
