These are disassembled milk cartons. The bottoms have been cut off, so they are approximately 25cm x 28cm. 22 sheets from the same manufacturer. Since they have been disassembled by hand, please refrain from purchasing if you are looking for perfection. Washed and disinfected with alcohol. We hope you can use them for your children's crafts, handmade materials, or as a substitute for disposable cutting boards.