These are a type of lymphatic drainage devices that utilize infrared light technology in addition to pressure massage. Infrared light penetrates deeper into the tissues, where it generates heat. This warming, also referred to as „thermtherapy“, helps to relax muscles and improve local blood circulation. The combination of tissue warming with subsequent pressure massage, which stimulates the lymphatic system, can contribute to a more effective drainage of excess fluids and waste products from the body. The infrared light sources are usually built directly into the massage cuffs.