1.neoprne can cooler 2.made of neoprene rubber materail 3.keep cool / ... 4 hours 4.SGS/TUC certification Product description: Name neoprene can coolerMaterialneoprene Size6.5*10.5cmThickness3--5mmColorgreen,red,black,more than ... ,100PCS/CTNCertificationSGS/TUV/CTIFunctionwaterproof,keep cool and warm ,heat-resistantUsagefor can cooler,pen holder