5 to 5.5"W bottom x 3.25 to 4.25 H x 5"W top
They fit a #3 paper filter or can be used with a reusable cloth filter. Put the filter into the top, place coffee grinds into the filter, and slowly pour hot water over the grinds. Repeat as many times as needed. Lift occasionally to check the level of coffee in the mug to avoid overfilling.