Urchart Disposable Sewer Sink Strainer Filter Bag Rubbish Bag Garbage Net Bag (100) Package include: 30PCS/100PCS Material : Nylon Size approx: 3.54"*3.54" It keep all the fine particles of food from going down the drain. After washing dishes just remove and toss it away, so easy to use. It will be the best choice for your kitchen or washroom sewer sink filter.