A spare cassette for diaper pots, smart poi, and paper diaper processing pots. 5-layer anti-odor film to keep out odors. Hygienic! ... 5-layer anti-microbial film has 99% anti-microbial properties. Hygienic treatment of diapers. Economical. 1 cassette can handle approximately 180 diapers. Cannot be used with Poitech diaper pots, strong and odor resistant, antibacterial diaper pots. Material: Cassette Body: Polypropylene, Cassette Film: Polyethylene; How to Use: (1) After removing the empty cassette, insert the grooves and convex parts of the new cassette. (2) Pull the film that is only one part out of the cassette evenly from 11.8 to 15.7 inches (30 to 40 cm), tie the edge of the film, push it under the shutter and close the top cover. Note: Please keep out of reach of children. It may choke or suffocate the film on your head.