Microwavable Organic Chinese Herbal Medicines Buckwheat Neck Pillow This Chinese medicine U spine pillow contains 30 kinds of rare Chinese herbal medicine, These Chinese herbal medicine can promoting blood circulation to remove blood stasis and eliminate spine fatigue. It has dual protection to the body, not only can effectively support the cervical vertebra, maintain normal physiological curvature, but also can care the back of the brain when you are sleeping, this physiological curve design not only ensure the cervical vertebra external muscle's balance, and maintain intra-spinal canal physiological anatomy state.