Features: 1. **Long-Lasting Heat**: Enjoy continuous warmth for up to 10 hours with our self-heating warm patch, perfect for cold weather activities and outdoor adventures. 2. **Quick Activation**: Experience instant heat within 15 to 30 minutes after application, ensuring you stay warm when you need it most. 3. **Portable & Convenient**: Lightweight and compact design allows you to carry the heat pack anywhere, making it ideal for travel, sports, or daily use. 4. **Easy to Use**: Simply open the package, peel off the backing, and stick it to your clothing or fabric for immediate warmth without any hassle. 5. **Versatile Application**: Perfect for warming hands, feet, or any part of the body, our heat pack is a versatile solution for cold weather comfort. 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.