Put tea and hot water in the pot, let it brew, then just set it over the cup. The bottom of the brewer is pressed to open the valve and release the tea through its filter. When you lift the brewer off the cup, the valve closes and the tea stops flowing.
Much larger than a standard sized teabag. These are unbleached, top filling spout, with a bottom fold. Fill with your favorite full leaf tea or herbal, and fold the flap or tie to close. Usable without a holder.