The "vacuum" insulation has a much higher performance than the usual double-layer structure. Even if you pour a cold drink with ice in it, the ice will not melt for a long time because the outside temperature is not transferred to the drink. Therefore, the original flavor of the beverage can be enjoyed without diluting the taste. When you hear the words "double-layered tumbler," you may imagine a thick mouthpiece. However, Sasu Gallery tumblers are so thin that they do not appear to be double-layered, so the discomfort of the mouthfeel does not interfere with delicate flavors. The "vacuum" insulation has a much higher performance than the usual double-layer structure. Even if you pour a cold drink with ice in it, the ice will not melt for a long time because the outside temperature is not transferred to the drink. Therefore, the original flavor of the beverage can be enjoyed without diluting the taste. When you hear the words "double-layered tumbler," you may imagine a thick mouthpiece. However, Sasu Gallery tumblers are so thin that they do not appear to be double-layered, so the discomfort of the mouthfeel does not interfere with delicate flavors.