... about 29400J/kg,in the same condition,the water absorb heat about4200J/kg,just one of senveth. ... 2.The PCM's state change keeps the temperature cool. When the temperature is below 30 degree, ... .2.Bed sheet:Not any energy consumption,natural cool and refreshing ,easy to clean!Give soothing and ... ice pad and other kinds of ice pad:2.The comparison of Feikang ice pad and other company’s ice pad: cool ice ...