Stay Warm from the Cold, Self-Heating Patch, Portable Winter Warmth Solution ,10pcs

Our self-heating patch for warmth contains iron powder and charcoal powder. It can heat up quickly, making you feel warm for a short time in the cold winter. It has a long heating time and can last up to 10 hours, providing warmth and care all day long. Its usage is very simple: After opening the package, take out the patch and stick it on the inside of the clothes, or you can stick it on the fabric and warm your hands with it. The patch will start heating within 15 to 30 minutes and the insulation effect can last for 10 hours. And it can be small and convenient, carried around, and enjoy warmth anytime and anywhere.