Features 1. **Instant Heat Relief**: Our Self-Heating Warm Foot Patches provide immediate warmth, perfect for soothing cold feet and alleviating menstrual discomfort. Enjoy comforting heat for 6 to 8 hours! 2. **Easy to Use**: Simply tear off the non-woven fabric sticker, apply the patch to your foot, and wear socks. Experience hassle-free warmth wherever you go! 3. **Versatile Comfort**: Ideal for various situations, these patches are perfect for outdoor sports, cold weather, or simply relaxing at home. Stay warm and cozy anytime! 4. **Natural Ingredients**: Made with iron powder and activated carbon, our patches generate heat naturally, ensuring a safe and effective warming experience without any chemicals. 5. **Perfect for Menstrual Relief**: Specifically designed to help women cope with menstrual pain, our patches provide targeted warmth to ease abdominal and lower back discomfort. Our warm foot patches (10 pairs in a box) contain iron powder and activated carbon. It can generate heat and provide sufficient warmth for the soles of the feet or the body. It is very helpful for women who experience abdominal pain, lower back pain and cold hands and feet during their menstrual period. Its usage method is very simple: Tear off the non-woven fabric sticker; Stick the patch on the outside, put on socks and enjoy the warmth of your feet for 6 to 8 hours. It is convenient to use and can be applied to outdoor sports, providing you with warmth in cold seasons.