Designed with a delicate tissue structure, the patented Finum Brewing Basket may be used for fine teas and coffee alike * Made of 18/10 stainless-steel mesh, the basket is framed in heat-tolerant plastic * Basket does not impart taste or aroma to beverages and allows the user to fully enjoy the aromatics of a brew * Lid helps maintain warm temperature for a longer period and can be flipped over and used as a drip tray for used tea filters * Filter size M fits cups with diameters from 2.3 to 3.5 inches; safe to clean in the dishwasher and also easy to rinse under running water