Designed with a non-stick, micro-pore plastic lining from high strength, 3-layer polyester fleece. The Long-life filter bag can be used up to 500 times for extraction of dust types which are not hazardous to health. The Long-life filter bag saves money on filter bag replacement while offering a convenient and easy means to capture and dispose of large wood chips. Not recommended for use with the fine dust creating by sanding. Integrated cap forms a tight seal during bag removal and disposal, keeping the dust contained and off the floor.