... .Environmental PP material. 2.dozens of hours cold life . 3.Insulation material is PU CFC-free. Characteristic:1.Made of environmental ... PP material, food grade, non-toxic, SUV resistant.2. Insulation material of PU CFC-free polyurethane .3. our storage container ... Vessel V Parts IIIArrangement of ice vessels 6(0.4L) insulation Box(6L,10L,12L,18L,30L,31L,44L,54L)