Pure natural herbal ingredients without any side effects.Self-heating patch design, you just need to stick it on the body area, easy to use. Heat helps stretch the soft tissues, relax muscles, which promotes flexibility and helps to decrease stiffness. Paste for relieving the pains of the knee. Quickly relieve pain, relieve joint pain, back pain, neck and shoulder pain. It\"s self-heating, it can penetrate deeply into the muscle right where it hurts. Works for all ages. Knee patches are comfortable to use and easy to use and carry.