Heat it up or Cool it down Heat it up or Cool it down from Evelyn Tsai Heat it up or Cool it down Keep the beverage nice and toasty or cool as ice. It is easy to carry over into everyday life, no matter Summer or Winter. gLike Heat it up or Cool it down Keep the beverage nice and toasty or cool as ice. It is easy to carry over into everyday life, no matter Summer or Winter. Industrial Design Share R 7 n Evelyn Tsai Senior Engineer Taichung, CA Follow Contact