After Melitta Bentz grew tired of the bitterness and troublesome grounds in her coffee, she poked holes in a brass pot and used her son's blotting paper to create the world's first coffee filter. Since then, we have continued to build on our quality with super-premium paper that glitters out the smallest impurities. Melitta Bentz would be proud. These all natural bamboo flavour enhancing coffee filters brew rich, smooth coffee. Fits all coffee makers that use a no. 4 size filter cone.