Keurig My K-Cup Universal Reusable Coffee Filter a simple and convenient way to brew your favorite ground coffees using your Keurig machine. Designed with innovative MultiStream Technology, this filter ensures full flavor and rich aroma are extracted with every brew. To use, just fill the filter with ground coffee up to the fill line, place it in your coffee maker, and enjoy a fresh cup of coffee. The filter also features a removable lid, making filling and cleaning hassle- for your convenience.