Say goodbye to single use coffee filters. The GSI outdoors Reusable Java Filter #4 is designed to brew coffee or tea over and over. � Easy to use and clean. � Reusable filter fits and stores away easily when not in use. � To use, place the reusable # 4 filter in the Collapsible Java Drip or other #4 drip coffee makers. Fill with coarse-ground coffee or tea leaves, pour boiling water through. � Material: Nylon � Dimensions: 11.4 cm x 10.7 cm x 17.8 cm