This is a sheet that you put in the toilet and when you pee on it, a Thomas the Tank Engine picture appears. I would like to offer the remaining 23 sheets, as some have been used. For those who want to give it a try ★ The instruction paper is a little dirty. The remaining sheets have been stored as is. I will give them to you in a clean case. Thank you for your understanding. My eldest son made progress with potty training thanks to this sheet!