The present invention relates to a band using a flexible coolant bar. More specifically, the present invention relates to a band using a flexible coolant bar which comprises a flexible coolant bar easily bending according to structural features, elastically wraps the same, forms a multiple heat insulation structure in an external direction to minimize heat loss, and has a simple structure to be applied to various products, thereby increasing use diversity and convenience. For the purpose, the band comprises the flexible coolant bar, a heat insulation cover part overlapping and wrapping the same in a multiple manner, and an elastic band part.;COPYRIGHT KIPO 2020
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