*Cone-shape ensures uniform extraction for pure coffee flavor *Thicker (20-30% more than the competition) specialty fiber filter design keep bitter elements, oils, and grounds in their place (and out of your cup) *Prefolded for convenience *Will fit most other cone-shaped filter coffeemakers *Removes impurities, acidity, unhealthy and bitter elements from the coffee. In your brewed cup you will find only the caffeine and desirable aromatic oils of the coffee beans *Works well with all types of roasts- even tea! Allowing you to make the perfect and most pure cup, every time *The CHEMEX® coffeemaker brewing system is a preferred method of roasters and baristas worldwide *Our filter paper is manufactured in the USA from North American materials only, adhering to responsible and sustainable practices *Compostable and biodegradable *Easy clean-up. No trays, no baskets, just simply remove the filter and discard *Fits all CHEMEX® Coffeemakers except three cup Class Series (CM-1C), three cup Handblown Series (CM-1), three cup Glass Handle Series (CM-1GH), and the Funnex (CM-FNX)