Oura - Ring 4 Sizing Kit - Size Before You Buy the OR4 - Unique Sizing - Receive Credit for Purchase - White - (2024)
Customers are saying
Customers are delighted by the product's precise sizing and perfect fit, ensuring a comfortable experience. Many also praise its superior build quality and consistent weight. Furthermore, its health monitoring capabilities, even detecting when users are not feeling well, are highly valued.
Free $10 gift card with purchase
Size yourself with the Oura Ring 4 Sizing Kit and receive a $10 Best Buy gift card to use towards the future purchase of an Oura Ring 4.
Choose a finger
Oura Ring 4 works on all fingers and can be worn on either hand. Make sure to size the finger you plan to wear your Oura Ring on - your fingers can be different sizes. For optimal performance and accuracy, we recommend wearing your Oura Ring on your index, middle, or ring finger.
Find your fit
Oura Ring 4 should fit snug around the base of your finger, but not to the point where it’s uncomfortable. The right size doesn’t feel too tight during daily wear or extended periods. When sizing yourself, the ring must fit over the largest part of your finger, like your knuckle.
Wear test
Your fingers expand and contract based on environmental factors, so we recommend wearing your ring sizer for 24 hours to confirm your best fit. Your ring should not rotate as you go about normal daily tasks. If you size in store, make sure to spend time sizing and try multiple sizes.
Sizes
Oura Ring 4 is available in sizes 4–15, and we currently do not offer half-sizes. Oura Ring sizes are slightly different from standard ring sizes, so you should not assume your ring size.
Materials
Our sizing rings are made of plastic, while the Oura Ring 4 is crafted in full titanium for comfort. Due to the plastic mold used to make our ring sizers, they may seem less comfortable than the actual Oura Ring you’ll end up receiving.
- Operating System CompatibilityApple iOS, AndroidBuilt-in Storage0 gigabytesMetrics MeasuredNot Applicable, Not Applicable, Not Applicable, Not Applicable, Not ApplicableProtective QualitiesNone
Reviews
Rating 4.8 out of 5 stars with 372 reviews
- Sizing Accuracy (132)
- Comfort (29)
- Build Quality (17)
- Fit (3)
- Health Monitoring (3)
Customer Images
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.
Compare similar products
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.
Want to give Oura Ring 5 as a gift but don’t know what size or finish they want? This gifting kit takes the guesswork out of gifting, allowing the recipient to purchase the correct size and preferred finish of their Oura Ring 5.
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.
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.
| Pros for Oura - Ring 4 Sizing Kit - Size Before You Buy the OR4 - Unique Sizing - Receive Credit for Purchase - White - (2024) | |||
|---|---|---|---|
| Comfort, Sizing Accuracy, Build Quality, Fit, Health Monitoring | Sizing Utility | Sleep Tracking, Overall Performance, Comfort, Battery Life, Design | Overall Performance, Sleep Tracking, Comfort, Battery Life, Design |
| 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— | There were no cons for this product— | Size, Scratch Resistance, Connectivity | Size, Weight |
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