4 Black Reusable K Cups for Keurig Coffee Makers BPA Free Universal Fit Refillable Kcups Coffee Filters for 1.0 and 2.0 Keurig Brewers 4 black k cups hidden Rinse them immediately should the quick drying Rinse them immediately should the product comes into contact with them Fast progress is easily made on both needle and wet felting projects and youll find Corriedale wool felts up quickly and is ideal for larger shapes Or be smart & buy a set of 4 reusable k cups to prepare one cup (different coffees) after another 0 k cup reusable coffee filters are a far superior choice to paper filters as they do not have to be disposed of after every use and each Reusable k cup is expected to make thousands of coffees