[Graphic News] Tumblers become daily essentials

Tumblers have evolved from a lifestyle trend into an everyday necessity, with most consumers using them several times a week, according to a survey by Thermos Korea and Gallup Korea. The survey of 3,000 adults aged 20-54 in seven major South Korean cities found that 62.4 percent use a tumbler or thermos bottle at least three times a week, including 33.2 percent who said they use one almost every day. Most respondents (61.1 percent) said they purchased a tumbler to keep beverages at the desired t