Product Description: This reliever combines moxibustion therapy, hot compress and vibration massage to provide warm care and pain relief for joints like the knees, elbows and shoulders. It offers constant temperature heating to improve blood circulation, relieve joint discomfort and keep knees warm, especially suitable for people with cold legs. The gentle vibration function relaxes surrounding muscles and eases soreness caused by cold, strain or aging. USB rechargeable design supports cordless use at home, office or during rest. Ergonomic shape fits knees snugly with adjustable straps for secure wearing. An ideal care device to protect knee health and relieve daily joint discomfort effectively.