They say that loose leaf tea needs room to breathe and expand to give you its fullest flavor. This wide-mouth infuser is designed to do exactly that. It sits on top of your mug and keeps out the sediment, but doesn't cramp the leaves' style! 4.75 in diameter 3 in height, and fits almost any cup or mug. Wide infusing chamber lets tea expand for maximum flavor. Dimension: 4.75" x 3.5" x 5". Weight: 0.2125 lb.