Perma-Brew 3 Year Re-useable Coffee Filters are more convenient, and economical than paper filters. Always ready to use-no more running out of filters. Ecologically sound-no daily filter disposal. No more trying to separate a single filter from a stack of paper filters. Rigid shape makes them easier to fill with coffee and to insert in the coffeemaker than paper filters. Micro-fine filter openings retain coffee sediment while flavor and aromatic components pass through for optimum extraction and inchfresh brewed inch taste. Made of laboratory-grade materials. Dishwasher Safe. Three year warranty. Fits all full size coffeemakers using fluted basket or cupcake style filters. Product Dimensions: 2.5 x 6.2 x 9.5 inches ; 2.2 ounces