This set includes ice packs ``2 subzero packs XL size'' and cooler bags ``1 hyper subzero cooler XL size.''

Main material: [Container] Polyethylene [Contents] Plant-based natural polymer ●Achieves fast freezing! Freezing completes in about half the time of -16℃ of conventional subzero packs! ●Retention time at subzero temperature is -16℃ compared to conventional products Equivalent to ℃ *There are individual differences in viscosity depending on the characteristics of the material, but there is no problem with performance.