This abdominal warmer uses natural mineral stones for a wearable "ganbanyoku" experience (a type of hot stone therapy). It's thin yet warm, and won't make you feel overheated. It prevents sweating and is comfortable without being stuffy. It protects your stomach from the cold! - Brand: BS-FINE - Product Name: BNZ211 - Color: Pink - Material: Natural mineral black rock salt - Features: Wearable "ganbanyoku" Thank you for viewing.