Features 1. **Instant Heating**: Our Disposable Warm Foot Patches heat up quickly within 15 to 30 minutes, providing immediate warmth to your feet when you need it most. 2. **Long-Lasting Warmth**: Enjoy up to 8 hours of continuous heat, ensuring your feet stay cozy and comfortable throughout the day or night. 3. **Easy to Use**: Simply open the package, peel off the backing, and stick the patch on the outside of your sock for hassle-free warmth on the go. 4. **Comfort in Cold Weather**: Perfect for winter activities, these patches are designed to keep your feet warm and toasty, making them ideal for outdoor adventures or indoor relaxation. 5. **Safe and Reliable**: Made with activated carbon and wood powder, our patches provide stable and reliable heat without any harmful chemicals, ensuring your safety and comfort. Our warm foot patches (in boxes) contain activated carbon, wood powder and adhesive. It can start up quickly, keeping you comfortable in cold weather. Its usage method is very simple: After opening the package, take out the patch and stick it on the outside of the sock. The patch will start heating within 15 to 30 minutes and the insulation effect can last for 6 to 8 hours. And it can heat continuously for up to 8 hours, providing round-the-clock warm care, which is stable and reliable.