A little Christmas surprise: In every product we send out in the run-up to Christmas, you will find a beautiful Christmas card. We wish you a unique and merry Christmas! Knee Pain Relief - Specially designed to conform to the knee for effective pain relief, Sumifun knee patches are the ultimate solution for knee pain. The pain patches are designed to fit your knee perfectly, providing targeted pain relief. The knee patches can also be used on your back, neck, shoulders, elbows, hips, and other areas where pain relief is needed. Safe and Natural - The knee pain relief patches are safe and natural, with wormwood herbal ingredients that have been proven effective and have no side effects. You'll smell the natural herbal scent when opening the package, and you can rest assured that the ingredients will not harm your skin. Fast-acting and long-lasting - The knee pain relief patch provides fast, continuous, and deep-penetrating pain relief that lasts up to 8 hours. The knee patches are great for muscle relaxation and joint pain, making them ideal for athletes, manual workers, and anyone else who experiences regular pain. Stay in Place - Our pain relief patches are easy to use. They stay secure even during sleep, and one application is sufficient for daily use. Enjoy pain relief throughout the day and night. No irritating odor: These heat patches have no pungent or unpleasant odor—only a faint herbal scent that is easily accepted. We provide high-quality after-sales service, and if there are any issues with our knee patch, you can at any time.