... physical therapy for traumatic hemorrhage, heatstroke, headache, strain, scald and fatigue d) Hot compress: alleviate rheumatic pain, neural pain, ... be warm for 100 seconds for each time, and for 60 seconds when be used continuouslySpecification size10*10cmweight65gmaterialNylon ... set inner box to secure the transportation and logistics well. pvc material flexible hot and cold gel pack with SGS MSDS