Please let us know the color and desired size before purchasing. Material: Surgical stainless steel (316L) Zirconia 18K coating Gold: Size 9 / Size 11 / Size 13 Rose Gold: Size 11 / Size 13 *If you would like a gift box, the price will change, so please let us know in the comments before purchasing. ^ ^ *What is surgical stainless steel? It is a material with extremely low allergenicity among stainless steels, and is called "316L" in the JIS standard. It is characterized by less discoloration and rust resistance, and is used in medical tools and body piercings. Please note that it may rust in hot spring ingredients. (Individual differences in allergy response exist) *Returns due to customer reasons (such as "it was different from the image") are not possible. Thank you for your understanding before purchasing.