Features 1. **Instant Heat Activation**: Our Disposable Warm Foot Patches heat up quickly within 15 to 30 minutes, providing immediate warmth to keep your feet cozy in cold weather. 2. **Long-Lasting Comfort**: Enjoy up to 8 hours of continuous heat, ensuring your feet stay warm 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 anytime, anywhere. 4. **Safe and Reliable**: Made with activated carbon and wood powder, our patches are designed for safe use, providing stable and reliable heat without any mess. 5. **Perfect for Outdoor Activities**: Ideal for skiing, hiking, or any outdoor winter activities, these foot patches are a must-have for anyone looking to stay warm in chilly conditions. Our warm foot patches (in bags) 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.