Coffee. The can shaped mugs in this set are conveniently made to optimize your space saving capabilities with a stack-able can shape. Stackability makes these mugs easy to store on the countertop or in the cabinet without taking up too much room. Each piece has it's own individual geometric design that comes together to form a cohesive yet unique set as a whole. Constructed of durable stoneware, these mugs are microwave and dishwasher safe for easy reheat and fast cleanup.