The Bialetti Musa polished stainless steel espresso maker comes from the award-winning design team of Guido Bergna. The fashionable stainless steel design focuses on stylish elegance. The Musa also features a new elegantly shaped knob which makes it easier to open the lid. Please note that this cup size is based on espresso cup sizes and not on regular tea or coffee cup sizes. 1 cup: The 1 Espresso Cup is equivalent to 60ml/2 fl. oz (maximum boiler capacity). It is 12.3cm high (base to top of knob). 2 cups: It has an overall height of 15cm/6in high with a base diameter of 8cm/3.1in. 4 cups: It is 16.5cm/6.5in high with a base of 8.6cm/3.8in and makes up to 4 cups/8.0 fl. oz/230ml of espresso coffee. 6 cups: It is 19cm/7.5in high with a base of 10.2cm/4in and makes 6 cups/10 fl. oz/300ml of espresso coffee.