1、 Professional filter: the same filter as the professional espresso machine, double-layer structure, the inner layer is woven by ultra-fine metal wire with high density to isolate coffee powder, and the outer layer is thick stainless steel sheet light perforated. 2、 Easy to clean: ABS material is selected, which has good self-cleaning performance. The stainless steel mesh is polished so that the coffee grounds are difficult to adhere, and the front and back sides will be cleaned after flushing. 3、 Food contact grade ABS double-layer 304 stainless steel filter has a fine inner mesh, good filtering effect, thick outer mesh, and firm support. 4、 Environmental protection and money saving: reusable coffee filter. It is more environmentally friendly, economical and practical than using plastic cups, reducing your drinking costs. 5、 Multipurpose even outdoor use: It can work well on a tall coffee mug, in the office and home for personal as a coffee maker, portable for short distancing backpacking, and for the camping and hiking.