Features: 1. **Quick Heating Technology**: Our hand warmers heat up in just 15-30 minutes, providing instant warmth to keep you cozy during cold winter days. Perfect for outdoor activities! 2. **Long-lasting Warmth**: Each patch is designed to continuously release heat for hours, ensuring you stay warm and comfortable for extended periods, whether at home or on the go. 3. **Safe & Skin-friendly**: Made with mild ingredients, our hand warmers are safe for all skin types, ensuring a worry-free warming experience without irritation. 4. **Easy to Use**: Simply open the package, peel off the backing, and stick the patch inside your clothing or on your hands for immediate warmth. No complicated setup required! 5. **Portable & Convenient**: Each pack contains 10 disposable hand warmers, making it easy to carry and use whenever you need extra warmth, whether at work, during sports, or while traveling. Our hand warmers contain iron powder and charcoal powder. It can generate warmth quickly, help drive away the cold, continuously release heat, and provide a long-term warm experience. The way to use it is simple: open the package, take out the patch and stick it on the inside of the clothes, or stick it on the fabric and put it on your hand to warm your hands. The patch will begin to heat up in 15-30 minutes. And the use of mild ingredients, will cause harm to the skin, and safe and reliable.