Nanjing Tongrentang’s Herbal Steam Neck Warmer delivers therapeutic warmth through traditional mugwort-infused steam technology. Its 3D ergonomic design contours perfectly to neck and shoulders, providing hands-free comfort for work, sleep, or travel. The medical-grade self-heating pad maintains a safe 40-50°C temperature for 8 continuous hours—ideal for office workers, seniors, or post-exercise recovery. Made with breathable, hypoallergenic fabric, it prevents irritation while effectively relieving muscle stiffness. As a time-honored brand since 1926, Nanjing Tongrentang combines authentic Chinese herbal medicine with modern heating technology, offering drug-free pain relief backed by ISO quality standards.