Ginger heat packs were used in the inner court of Beijing Tongrentang.

Herbal self-heating body warmer for menstruation, stomach, and baby. Inheriting the imperial court's herbal formula, it extracts the essence of fresh ginger; maintains a constant temperature of 52℃ for up to 12 hours of self-heating; made with skin-friendly non-woven fabric for a secure fit; dispels cold, warms the stomach, and nourishes the waist, abdomen, shoulders, and neck. Individually packaged, it's a must-have for menstruation and autumn/winter warmth. "For Imperial Use" signifies inheriting the ancient imperial court's herbal care philosophy, using carefully selected authentic ginger to extract plant essences, combined with iron powder, vermiculite, and activated charcoal heating materials. The formula is gentle, releasing herbal warmth slowly, suitable for daily home heat therapy. Simply tear open the packaging to start heating up quickly and maintain a stable, comfortable 52℃ temperature. The heat is even and long-lasting; scientifically controlled temperature prevents sudden burns, penetrating from the surface to dispel cold from the body, saying goodbye to cold hands and feet and a cold abdomen. Made with a soft and breathable non-woven fabric surface, it offers excellent breathability and won't feel stuffy on the skin even after prolonged wear; the upgraded pressure-sensitive adhesive has moderate stickiness, ensuring a firm bond that won't easily slip off, and leaves no sticky residue after removal; each piece is individually sealed to prevent air exposure, ensuring stable storage and convenient access.