These genuine Toddy reusable replacement filters are uniquely designed specifically for cold brew filtration, allowing you to extract all the natural, delicious flavors of your coffee and tea while leaving behind the bitter acids and oils. This package includes two replacement filters for the Toddy Cold Brew System. For best performance, it is suggested that filters be changed after 10 to 12 uses or every three months, whichever comes first; however, you can extend the life of these filters when they are paired with the new Toddy Paper Filters.