Inner diameter approximately 15cm (for women) 16 stones Made in China ・Materials/Ingredients: Natural coral (bead diameter: approx. 12mm), silicone rubber ・Product color: Natural coral ・Product size: Inner diameter approximately 15cm (for women) ・Notes: ・Because this is a handmade product using natural materials, the shape, size, color, inclusions, and spots will vary from piece to piece. Please understand this beforehand. ・Gem coral is polished during processing from unpolished raw wood. Gem coral, which is mainly composed of calcium carbonate, is particularly vulnerable to acid, and the luster may fade due to sweat, or it may become white and powdery. ・If the product gets wet, the coral and rubber will deteriorate more quickly, so we recommend removing it when swimming or taking a bath. ・The elastic cord may deteriorate and break over time depending on usage. Although it is new and unused, please refrain from purchasing if you are concerned about storage at home.