The Cafec Filter Paper is produced to bring out the best in your coffee. CAFEC filter paper has “Two-Side Crepe” developed by their original paper making technology (Air-through dry). Due to the balance of the height of the crepe on both sides, it can keep an air layer between paper and dripper so water can flow in a consistent speed. No bleach, glues, chemicals or unnatural elements are added to the pulp. This is simply a 100% clean, eco-friendly, forest-sustainable coffee filter paper. This allows a smooth water flow and less chances of blockage during coffee brewing. Perfect for use with the Cafec 2 Cup Flower Dripper and Hario V60 02 Drippers. Features 100 filters per pack High quality filter paper FSC (Forest Stewardship Council) certified 100% sustainable – No wood is used in the paper making process Compostable & full-biodegradable Made in Japan