Single serve coffee filters for JavaJig. For use with Melitta JavaJig System. Easy: Simple to use. Ready in seconds. Economical: Save money. Use your own favorite coffee or tea. For use with Melitta JavaJig Filter System. Melitta JavaJig for use with most Keurig Inc. style single serve coffee brewers. Melitta JavaJig and Melitta products are not affiliated with or approved by Keurig Inc. Environmental: Compostable. Reduces environmental impact. Recyclable.