There are many kinds of coffee filter paper in markets, but it would be a big mistake if you think it is just a paper and there is not much difference even if which paper you use. Our CAFEC filter paper has “Two-Side Crepe”. Thanks to the best balance of the height of crepe on both sides, it can keep enough air layer between paper and dripper so water can be flowed in ideal speed. That is, “Two-Side Crepe” can be said a proof of good filter paper. It is a paper, but not just a paper!