These versatile and clever shot glasses can do a lot more than keep your vodka cold. Use them to serve a chilled dessert, ceviche or oysters or any other food or drink that requires icy temperatures. To chill the glasses, just soak them under water for 60 seconds. When the water evaporates, the ceramic's natural cooling effect is triggered. The chalkboard surface allows for personalized scribbles or fun designs. Dishwasher safe. Set of 4 in a gift box.