Highlights- OURA RING 4 SIZING KIT - The Oura Ring 4 Sizing Kit is the ideal way to find the perfect size. It’s a custom sizer that allows for you, and those around you, to find the perfect fit before purchasing.
- RECEIVE $10 CREDIT - With a sizing kit purchase, receive a $10 Amazon credit towards the future purchase of an Oura Ring 4. Sizing kit is not returnable (terms and conditions apply).
- COMFORT AND ACCURACY - A properly fitting Oura Ring will result in the highest data accuracy, comfort, and overall experience.
- CHOOSE A FINGER - Oura Ring 4 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring 4 on your index, middle, or ring finger. Size the exact finger you plan to wear your Oura Ring 4 on.
- HOW IT SHOULD FIT - Oura Ring 4 should fit securely and comfortably at the base of your finger. Your ring should not rotate as you go about normal daily tasks. We recommend wearing your ring sizer for at least 24 hours to confirm your best fit.
OverviewIncluded Components :
Oura Ring 4 Sizing Kit
NOT STANDARD SIZING - Oura Ring 4 sizes are slightly different from standard ring sizes, so it is important to size yourself using our Oura Ring 4 sizing kit and to follow the instructions provided. Oura Ring 4 is available in sizes 4-15. There are no half sizes.
Free & Easy Returns
Best Deals
![/fashion-men/jack_jones/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20240305/4ef48af441e2b44cea1673cd2e4aff67/en_dk-men-brands-04.png)
![/fashion-men/seventy_five/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20240305/4ef48af441e2b44cea1673cd2e4aff67/en_dk-womens-new-brands-01.png)
![/fashion-men/skechers/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20240305/4ef48af441e2b44cea1673cd2e4aff67/en_dk-womens-new-brands-02.png)
![/fashion-women/mango/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20240305/4ef48af441e2b44cea1673cd2e4aff67/en_dk-women-brands-05.png)
![/fashion-women/guess/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20240305/4ef48af441e2b44cea1673cd2e4aff67/en_dk-women-brands-09.png)
![/fashion-women/ella/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20241812/en_dk-nav-brands-01.png)
![/fashion-women/skechers/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20241812/en_dk-nav-brands-02.png)
![/fashion/view-all-kids-clothing/nike/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20240911/nav-web/en_mb_uae_brand-01.png)
![/fashion/view-all-kids-clothing/disney/disney_minnie_mouse/disney_frozen/disney_princess/disney_mickey_mouse/disney_baby/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20240911/nav-web/en_mb_uae_brand-03.png)
![/fashion/view-all-kids-clothing/new_balance/?sort[by]=popularity&sort[dir]=desc&limit=50](https://a.nooncdn.com/cms/pages/20240911/nav-web/en_mb_uae_brand-11.png)
![/music-movies-and-tv-shows/musical-instruments-24670/pianos-keyboards-synthesizers/chloris/?sort[by]=popularity&sort[dir]=desc&limit=50&page=1&isCarouselView=false](https://f.nooncdn.com/cms/pages/20250407/books-nav/en_uae_dk-nav-brands-04.png)
![/music-movies-and-tv-shows/musical-instruments-24670/pianos-keyboards-synthesizers/roland/?sort[by]=popularity&sort[dir]=desc&limit=50&page=1&isCarouselView=false](https://f.nooncdn.com/cms/pages/20250407/books-nav/en_uae_dk-nav-brands-05.png)
![/music-movies-and-tv-shows/musical-instruments-24670/pianos-keyboards-synthesizers/donner/?sort[by]=popularity&sort[dir]=desc&limit=50&page=1&isCarouselView=false](https://f.nooncdn.com/cms/pages/20250407/books-nav/en_uae_dk-nav-brands-06.png)
![/music-movies-and-tv-shows/musical-instruments-24670/pianos-keyboards-synthesizers/korg/?sort[by]=popularity&sort[dir]=desc&limit=50&page=1&isCarouselView=false](https://f.nooncdn.com/cms/pages/20250407/books-nav/en_uae_dk-nav-brands-07.png)
