Serve coffee or tea to guests in smiling Double Walled Smiley Mug. The gleeful face of this coffee mug is sure to give your day a positive kickstart. Designed with double wall technology which creates a vacuum layer of thermal insulation that keeps hot drinks hot and cold drinks cold, and a side handle, the coffee tumbler lets you pour hot beverage without worrying about hurting your hands. This mug is for more than just hot coffee or tea, it can be used to serve chocolate shakes and mochas.