Catherine Jones, Psychologies Magazine I Am Not A Paper Cup is a reusable, double walled, thermal 350ml ceramic mug with a re-sealable silicon lid that cleverly echoes the design of a disposable coffee cup. A cool alternative to a disposable coffee cup, this heat proof cup is perfect for the daily commute, or to keep a hot drink warm to enjoy at home. Dimensions: 3.5"" diameter; 6"" tall Dishwasher safe.