Purely natural, non-irritating. Made from pure natural plants as raw materials, perfect for health! (Contraindicated for pregnant women, lactating women, and infants) Activating blood circulation and removing blood stasis, mugwort leaves combined with other ingredients such as ginger can directly reach the painful area and relieve pain! The duration is 6 hours, one patch during the day and one patch at night, the pain will gradually go away! (Refuse to take injections and medicine,) Convenient and easy to use, with specific shapes for each part! The size of each piece: the moxa bag is 11*7 cm; the total length is 39cm, the elastic band is pulled open: 22 cm; the moxa bag part is 14 cm high; the elastic band part is 2 cm high; Whether you are a sedentary office worker or a laborer who works hard, you really need it at home! It’s very comfortable to stick on! Read Less