The coffee permanent filter is made of an innovative and ultra-fine stainless steel mesh for even filtration when brewing coffee. The material made of stainless steel and nylon prevents waste and replaces the conventional paper filter for up to 100 brewing cycles. Conveniently, the coffee maker can be folded. This not only saves space at home. The very lightweight coffee permanent filter in size 4, weighing 10 g, can also be easily taken anywhere. The resource-saving and permanent coffee filter is perfect for coarsely ground coffee. After brewing, it can be rinsed under running water with a brush or cleaned in the dishwasher.