Costco shoppers can now add an Oura Ring to their shopping carts. As of Wednesday, the world's largest membership-based retailer is selling the device. 

The Oura Ring is available on Costco.com. Upon purchasing the smart ring, online shoppers will receive an additional ring charger at no charge. This offer is limited to the fourth-generation Oura Ring. Customers can buy a Gold, Silver, or Black ring in sizes 4 to 15. The other finishes, including Brushed Silver, Stealth, and Rose Gold, are unavailable at Costco, but can be bought on Oura's website, Best Buy, or Amazon.

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The Oura Ring 4 was rated 's product of the year for 2024. The device can track your activity, sleep, and stress, and provides data about your daily, monthly, and long-term health. 

"The Oura Ring 4 stands out as a beacon of seamless integration between advanced health tracking technology and everyday wellness," 's Kerry Wan wrote about the product. 

The smart rings aren't available in Costco stores. An Oura representative did not say when they would be available in-store. 

However, the company continues to expand its retail footprint. In March 2024, Oura launched on Amazon. Last April, Oura announced its partnership with Target, where people could try on ring sizes in stores and purchase a smart ring directly. Best Buy has had an international partnership with the brand since 2023. 

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Oura's Chief Marketing Officer Doug Sweeny credited Costco's "loyal" customer base of families and fitness and tech enthusiasts as a reason for the partnership. 

"This collaboration provides a powerful, global platform to help us reach more individuals and empower them to take control of their health using Oura's comprehensive data and insights," Sweeny said in a press release. 

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