Chemex filters are designed to eliminate even the finest sediment along with unwanted oils and fats. Their unique composition ensures an ideal filtration rate—neither too fast nor too slow—allowing for the optimal infusion time. This controlled brewing process, similar to steeping tea, enhances the coffee’s flavor and enables precise fractional extraction: it blocks the bitter compounds while allowing only the desirable flavor elements of the coffee bean to pass through. Features Pre-folded for convenience. Will fit most other cone-shaped filter coffeemakers. Works well with all types of roasts- even tea! Allowing you to make the perfect and most pure cup, every time. Chemex filter paper is manufactured in the USA and uses only USA materials; responsibly harvested and conforming to SFI, FSC, and PEFC sustainable programs. Compostable and biodegradable. Thicker filters (20-30% more than the competition).