Oura Ring Gen3 Heritage - Black - Size 12 - Smart Ring - Size First With Oura Ring Gen3 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness

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

Ultrahuman AIR Size 6 Smart Ring - Bionic Gold