Hot selling tourmaline back belt for relieving pain 1) OEM, ODM 2) We have our own factory 3) ... : XXXL(125cm,12.5 inch) Hot selling tourmaline back belt for relieving pain Principle of Action and Function:1)Release Far-infrared ... :Physical symptoms for those cold chills, postpartum pain, cold lower abdomen, lower back pain, cold, cold stomach pain, muscle strain, lumbar disc herniation, bone ...