Tool: This size kit provides accurate measurements for most smart and health tracking rings, ensuring a suitable and comfortable fit Easy and Convenient Sizing Tool: Simply measure the circumference of your finger according to the instructions in the size kit, and you find the correct ring size. This tool can be reused multiple times and is perfect for personal or household use Accurate Measurement for Optimal Performance: The Kit allows you to measure your finger properly. With sizes 4-15, this kit ensures you get the , enhancing the data accuracy and overall comfort Custom Fit for Your Finger: Designed for all fingers, the Kit ensures a secure and comfortable fit. For best results, wear it on your index, middle, or ring finger, and measure for 24 hours to confirm the most accurate fit for Ring Avoid Sizing Errors: The Kit is designed to help you avoid discomfort from incorrect sizing. Avoid returns and exchanges by finding your correct size upfront with our professional sizing kit, Weight: 0.09259415004 Pounds, Manufacturer: Kueohse