Oura Ring 4 Sizing Measuring Tool Kit - Size 4-15 Finger Gauge for Accurate Ring Size Measurement

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• Compatibility: Compatible with the Oura ring sizing kit, enabling users to easily determine their ideal ring size (Note: Using lubricating oil can facilitate easier wearing).
• User-Friendly: Users simply follow the instructions on the measuring card, placing it on their finger or directly measuring the finger's circumference to find the corresponding ring size.
• Measuring and Size Verification: Position the sizing tool at the base of your finger to prevent it from spinning freely. We recommend wearing it for over 24 hours to determine the most accurate size for optimal data and comfort.
• Finger Selection: Suitable for all fingers, whether left or right. Choose the ring size based on the exact size of the finger on which you plan to wear the ring.
• High Accuracy: The measuring card is precisely designed to ensure users can measure accurately, avoiding discomfort caused by incorrect sizing.