Round 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 Oxygen cleansing is a bleach-free process, ensuring no chemical residue or taste is imparted to the filter 100 count Works with the Ratio Eight Glass Carafe or Dripper. Product Name: FC-100