Thank you for viewing! This is a size measurement kit for the Even Realities smart ring "Even R1". *This is not the smart ring itself! Please be aware.* Please see the following page for more information on Even R1: https://www.evenrealities.com/ja-JP/smart-ring Recommended for those who want to speed up the size measurement and ordering process. By determining your size in advance and placing your order, you can expect to shorten the delivery time by a few weeks. Sizes 6, 7, and 8 have been actually worn. Due to the nature of the product, some scratches are visible, so please purchase only if you can accept this. It will be sent in simple packaging via Rakuraku Mercari Delivery (Nekopos).