Disposable Filters for Use in Keurig® Brewers – Simple Cups – 300 Replacement Filters – Use Your Own Coffee in K-cups: Enjoy your own coffee your way with Simple Cups. Use your Simple Cup Filters with your Simple Cup disposable K-Cups, or with any K-cup and save immediately. Use Your Own Coffee in K-cups: Stop spending tons of money on pre-made K-cups! Don’t settle for pre-determined flavors. Make your life simpler with Simple Cups. At a fraction of what a K-Cup would cost, you can use YOUR own favorite coffee in your Keurig machine – and can do so cost effectively and easily. Your coffee experience just got that much better.