The product adopts cold and hot compress which is designed to alleviate symptom and quicken recovery by increasing the superficial temperature of human body to enlarge blood vessel and blood flow, improve human body's microcirculation.It is suitable for human body's cold compress such as headache, fever, heat stroke,saold,pulled muscle,muscle strain and so on. Also for human body's hot compress such as arthritis,rheumatism,Stomach discomfort, Cervical spondylosis ,lumbar muscle strain and so on.