SYNTHOLKINE Self-heating plasters Muscle pain 8 hours of constant heat Therapeutic heat Without medicines Targeted action, back, neck and shoulders Small format 2 pieces The Syntholkine self-heating patchrelieves muscle pain thanks to simple methods used by physiotherapists, such as thermotherapy, which treats pain with heat . It is particularly effective for muscle pain in the back , neck and shoulders . It contains heat-producing agents such as activated carbon, water and iron which, when in contact with air, transform into heat. The therapeutic heat of this self-heating patch spreads continuously on muscle pain to relieve it and obtain a more effective result. Pain is treated specifically and quickly. It facilitates the elimination of toxins and reduces pain. The small size of the heating patch is ideal for targeting and treating painful areas. It adapts easily to the body and its every movement. Comfortable , flexible , very discreet and odorless . After application, the muscles are more relaxed and the pain is reduced . This pack contains 2 small self-heating plasters .