Sick of that papery taste left behind by subpar filters? The Bonmac #4 bamboo filters leave behind undetectable paper flavor because, you guessed it—they are made from bamboo! The wood fibers that make up most filters are weaker, leeching fine woody particles into your brew. The bamboo is a much stronger fiber, giving you a cleaner cup. In addition to improving the taste of your coffee, you can feel good about improving the world with this more sustainable, tree-saving choice. These filters will work for any coffeemaker that uses a cone-shaped #4 filter.