... OriginChina Mainland SizeØ10.3cm Weight90g Purpose:Cold compress: physical therapy for traumatic, heatstroke, itch, headache, fevers, toothache, scald, fatigue ... in a microwave oven with medium power for 100 seconds for each time, and for 60 seconds when be used continuously. ... -18°c condition, and can be repeatedly used alternately for hot and for cold.Technical Specifications1, Boiling ( 5-10 min.) 2 ...