Reveal the subtleties in your favorite coffee's flavor profile with premium BUNN coffee filters. Prevents coffee sediment from accumulating in the carafe and clouding the coffee. Manufactured from high quality, heavy weight paper, so the water flows properly through coffee/tea. Uniquely designed for strength so the sides are taller and you don't end up with overflow and grounds in your coffee. Produced using an elemental chlorine-free (ECF) bleaching method.