GSI Outdoors Reusable Java Filter - 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. Durable Nylon. Designed to fit into traditional #4 cone pour over coffee makers. Weight: 0.2oz Material: Nylon Major Dimension: #4 Includes: #4 Re-usable Java Filter Dimensions: 4.5in x 4.2in x 7in