Food grade PP Outer cup 450ml, inner cup 240ml Medium fine/fine 10-12g Come with 3 reusable K- cup, can taste your own coffee Portable, suitable for outside activity Build in K cup basket suitable for KEURIG k cup coffee pod. Also you can use the reusable k cup to fill in your own favorite coffee ground. Drip hot / cold coffee If you want cold brew, pour cold water or ice on the cup. Travel mug design small, portable, can drip coffee anywhere any time. Size of the mug Outer cup 450ml (as a normal water cup) Inner cup 240ml (coffee capacity) Lid 180ml (as a sharing cup)