1. Large Coffee Filters: 9.75 top diameter, 4.25 bottom diameter, suitable for a variety of coffee machines. Our coffee filters are designed to be taller, reducing mess when brewing. 2. Materials: Our coffee filter baskets are made of natural virgin pulp fibers. These heavy-duty filters undergo rigorous thickness, porosity and other quality inspections. These round coffee filters make it easy for you to enjoy your coffee time. 3. Perfect Coffee Experience: These large coffee filters have a semi-permeable membrane surface, allowing the liquid to release more aroma when brewing, resulting in more delicious coffee. The flow rate of these white coffee filters will not cause overflow, bringing you the perfect exotic or blended coffee you crave! 4. Environmentally Friendly Choice: You are using compostable and biodegradable coffee filters that have been bleached without elemental chlorine, which is safe and will not affect the taste. These environmentally friendly reusable coffee filters are very convenient to use, handle and discard.