DIMENSIONS: 3.25” H x 4.5” W (expanded), 0.75” H x 4.5” W (collapsed) and weighs 3.6 ozEASE OF USE: Set on top of a cup or bowl, load top with a filter (#2 Cone compatible), grinds and pour hot or boiling water (careful when pouring) into the top - coffee will slowly drip through the two holes in the bottom until complete and ready to drinkHEALTHY: Material does not absorb coffee odors or taste and will not transfer plastic or chemical taste to the brewCONVENIENT: Features a collapsible design for easy storage and transportMATERIALS: Silicone construction and is dishwasher safe