About the product Our warming patch contains sodium oxide and vermiculite. It can provide super long-lasting heating, safe and effective, with a high temperature of up to 10 hours, warming your hands, body and feet, making your whole body warm. Its usage is very simple: first take out the patch, open the outer bag, tear off the backing film, and then stick the warm sticker inside your clothes. The warming effect of the warming patch can last for 18 hours. After use, it releases heat through chemical reactions, raising body temperature and warming your hands and feet, ensuring that you are always warm when you go out. Product name: Warming patch Product ingredients: sodium oxide, vermiculite Keywords: disposable warming patch Weight: 41g Product specifications: 2pcs Product size: 12*9cm Note: Light reflection and different monitors may cause the color of the product in the picture to be slightly different from the actual product. Minor errors are allowed in measurement.