... waterproof treatment)filler a specific high-tech nanometer ice-pad material Product Size 30*35cm,30*40cm ,40cm ... pressurization of 200kg.Notes:1, Prevent the ice-pad from sharp-edged tools and fireworks. In case ... cotton cloth is needed to put on the ice-pad.3, The cooling effect is relatively weak when ... towel after contact water.5,For drivers, avoid direct sunshine in case of leave when the external ...