15 brand new, unused pieces. A medical device that sticks to the inside of underwear to warm the abdomen and lower back. The comfortable warmth of the steam deeply warms the abdomen and lower back, promoting blood circulation. ● Comfortable temperature of approximately 40°C lasts for 5-8 hours. ● Gentle steam on the skin. Does not wet clothing. ● Thin sheet that is discreet under clothing. ● Fragrance-free, making it easy to use when going out. ● Optimal design for women's abdomen and lower back. ● Effects: Thermotherapy (improves blood circulation, activates the function of the stomach and intestines, relieves pain from neuralgia and muscle pain)