This Bialetti Mini Express set consists of a 2 cup Mini Express stove top espresso coffee maker with two Pop Bicchierini coffee cups. Please note that this cup size is based on espresso cup sizes and not on regular tea or coffee cup sizes. The Mini Express espresso coffee maker works like the original Moka Express; you fill the bottom tank with water and fill the funnel with coffee. Then screw on the top column and place direct on stove top. Place the cups under spouts and your espresso will be ready in 4-5 minutes. The coffee maker is suitable for all hobs except induction. It should be hand washed only. The two porcelain Bicchierini Espresso Coffee cups have thick sides to retain heat. Each cup is 6.4cm/2.5in high with an upper diameter of 6.3cm/2.4in.