Specifications: Material: Iron Powder Vermiculite Activated Carbon Heating Time: About 10 Hours Max. Temperature: 63oC Average Temperature: 53oC Shelf Life: 3 Years Patch Size: appr. 12*9cm Features: 1. Self heating pads contains effective and safe ingredients can keep you warm for about 10 hours with average temperature of 53oC and even max. up to 63oC an essential during the cold winter days. 2. Simple to operate and no need to rub or knead before use for instant enjoyment quick to stick on your clothes and effortless to remove with no residual left. 3. Breathable non-woven fabric can allow the air to enter the inside part which can help the built-in polymer fully react with the oxygen for faster warm up. 4. Easily provide long lasting heating effect when you paste it on your abdomen waist back shoulder arm elbow joint leg and so on effectively helping protect from coldness and relieve your the pain caused by long time standing or walking. Caution: 1.Please avoid pasting directly on your bare skin in case of getting hurt by high temperature. 2.Please remove it immediately when you have any discomfort or when it has become totally cold. 3.Pregnant women and infants are forbidden to use the product. People who suffer from diabetes disturbance of blood circulation skin disease should use under the guide of doctors. Package Included: 10Pcs/20Pcs/30Pcs/50Pcs* Body Warmer Stickers Warm Tips: Due to manual measurement there are errors. Due to different monitors and light effects the actual colour of the item may be slightly different from the colour shown in the pictures.