Fast Pain Relief: Quickly relieve various pains associated with muscle strain, neck pain, hyperostosis, knee pain, strain & sprain. Helps relieve pain related to lumbago, muscle strain, sprains and bruises. Include Herbal: The hot patches for pain relief are made from precious herbal contain capsaicin. Through our unique and advanced technology, the heat patch successfully brings a self-heating effect that can relieve various pains. Easy to use: The pain relief patch measures 2.8in x 3.9in. You can cut the pain patch to any size you that fits your painful area. It effectively relieve your back pain, neck pain, shoulder pain,hand pain, knee pain, muscle pain, elbow pain and more. Note: Adults over 16 can use it for 3-4 hours, up to 3 times a day, for a total of 7 days. Children under 16 should consult a doctor. If pain or excessive skin irritation occurs, stop using it and consult a doctorimmediately.