Please be sure to read the profile! Photo size: Approximately size 16 (6mm+ x 4mm used) (Feels like wearing it on a finger circumference of 6cm, photos 3, 4) Terahertz coin cut: 6mm~6mm+ x 3mm Premium cut: 4mm (±0.2) Uses Ope-lon rubber We will accept size consultations, but for size reductions in terms of design, it's roughly size 16 → size 10. For increases, it's size 16 → size 22. Please consider increments of about 6 sizes. Maximum size 28. Used bead sizes (coin 6mm~6mm+ size) (Premium 3.8mm~4.2mm) We can adjust slightly depending on the bead size, so we will try to get as close to your desired size as possible by selecting the coin and premium beads. ✡️ In that case, we will create a dedicated listing and upload the ring we made there. (Cancellation is possible) If you're not satisfied with the size or want to think about it more, please feel free to let us know. I think a size larger than the usual ring size is better. Photos 3 and 4 are on the index finger. Before wearing the ring, I had coldness and joint pain, and I used to get cramps, but it has completely calmed down (my personal opinion). There are also ready-made ring types, but they break easily if something touches them from the outside. I didn't want to have that disappointing experience again, so I made this. For coldness and pain in the fingertips that cannot be addressed with bracelets! Tested by a public institution ・Terahertz waves are a frequency band that vibrates 1 trillion times per second. It is known that when these terahertz waves are irradiated, substances resonate, causing body temperature to rise, promoting the growth of plants and animals, and enhancing vitality. Profile must read Please refrain from purchasing if you are concerned about home storage or do not understand handmade products. We have other items for sale, so please take a look if you like.