Oura Ring Gen3 Heritage - Silver - Size 13 - Smart Ring - Size First With Oura Ring Gen3 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness

Oura Ring 4 - Silver - Size 11 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness

Oura Ring 4 - Black - Size 12 - Size Before You Buy

Oura Ring 4 - Stealth - Size 13 - Size Before You Buy

Oura Ring 4 - Gold - Size 12 - Size Before You Buy

Oura Ring 4 - Brushed Silver - Size 12 - Size Before You Buy

Oura Ring 4 - Rose Gold - Size 6 - Size Before You Buy

Oura Ring Gen. 4 Size 8 Gold Smart Ring New Sealed