This product keeps the body warm and relieves arthritis and colds. The crowd has a cold, women are menstruating, and middle-aged people like rheumatism and joint pain, so give cold and warm care.It is suitable for heatstroke prevention and cooling in outdoor sports such as field work, mountain camping, polar exploration, winter tourism, skiing, fishing, etc.Just remove the paper from the back and place it on the sole/back/shoulder or put it in your pocket. It heats up quickly within minutes.The product must be attached to the outside of the underwear, not directly on the skin. Be careful of low-temperature scald. Prolonged body heat will cause symptoms such as erythema and blisters. Children, disabled or sensitive skin need to pay more attention to the occurrence of low temperature burns when sleeping at night.Note: Do not hold directly on human skin, but on the outer layer of clothing to be heated or compressed.Material: iron powder + activated carbonDelivery Quantity: 1set (10pcs)Package Contents: Only the above package contents, excluding other products.Size: 15.5*12cm(Reminder: The size is measured manually, please allow 1-2 cm measurement error)Color: as pictured(Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)