Changing Soju Glass Set(Tipsy Scholar Color)Changing Soju Glass Set(Tipsy Scholar Color) 3 pieces per set Product : 46mm (top)44mm (bottom)58mm Weight : 310g(Including package) 75g(Cup only) Material : Glass Concept This color changing soju glass set is inspired by the three tipsy scholars depicted in Former Kim Hong do Pil Peace Thanksgiving Feast (National Museum of Korea Collection No. 5769). When cold liquor is poured into the glass, the scholars faces turn red with heat reactive pigment