Oura Ring 4 - Stealth - Size 13 - Smart Ring - Size First With Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up

Oura Ring 4 - Silver - Size 10 - Smart Ring - Size First With Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up

Oura Ring 4 - Brushed Silver - Size 11 - Smart Ring - Size First With Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness

Oura Ring Gen3 Horizon - Silver - Size 11 - Smart Ring - Size First With Oura Ring Gen3 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness

Oura Ring 4 - Gold - Size 6 - Smart Ring - Size First With Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up To 8

Oura Ring 4 - Rose Gold - Size 6 - Smart Ring - Size First With Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up