One cassette can dispose of approximately 180 baby diapers (about one month's worth). [Contents] 3-pack x 1 box (unused) 2-pack x 1 box (only 1 used, the remaining 2 are unused) Total: 5 unused cassettes *The box of 2 is opened, but all 5 cassettes are unused. [Product Size] Diameter: Approximately 18.3cm x Height: Approximately 5.8cm When shipping, due to the size of the packaging materials, the box of 3 will be shipped as is, and the 2-pack box will have 2 unused cassettes taken out and included (the cassettes themselves are unused, so please rest assured). We will pack carefully and ship. We hope to pass it on to someone who can use it.