The wave-technology paper filters guarantee that coffee and water will remain in contact throughout the entire brewing process. Thanks to the flat bottom of these filters, the brewing is slowed down, hence encouraging more balanced coffee extraction.In the packaging, you\'ll find 50 paper filters of size 155 (fit for the preparation of 1–2 cups), which are suited perfectly for Kalita "#155" products. ***Kalita Co., Ltd. was established in 1959, in Tokyo. Since then, their products — extremely high-quality coffee-making equipment designed for brewing the perfect coffee at home — have become famous all over the world.