This is a large clear glass coffee mug or tea mug. It has a 16 fl. oz / 500 ml capacity. It is perfect for anybody looking for a large cup for their tea or coffee. With a capacity of 500 ml / 16 fl. oz. you can take some extra big sips from your favorite drink. The CYPRUS glass cup features a double-walled design to keep contents hot or cold longer than a normal cup. The thick design is sturdier than most double walled glasses, and the bottom provides a sturdy base.