Clever Coffee Dripper - LARGE + Pack of 100 Filtropa #4 Coffee Filters Included! Redesigned and uses more durable plastic. New plastic used will bounce. Included with your coffee dripper is a pack of 100 high quality filtropa filters #4 100% BPA Free Shut-off valve design holds the coffee until the brewing process is complete The dripper will fit on cups and thermoses with tops wider than 1.5" and less than 3.75" in diameter