... treatment)filler: a specific high-tech nanometer ice-pad material Product Size: 15*25cm,20*35cm,25*35cm ... 45cm,90*90cm, 90*140cm,ect.Product Name: summer cool cushion Material: Outlayer: Polyester Inerlayer: PVC temperature constant time ... material without power supply, do not need pre-cool and economical.it has a cerfication of SGS and ... : Do not put this product under strong sunlight. cool gel mat