BabyBjörn Toilet Training Seat Can be used in combination with a step stool, allowing your child to use the toilet with confidence. The step stool has a secure non-slip grip for safety. In my case, the transition from diapers to the toilet was very smooth. The dirt on the white part of the step stool is soil. For a while, when my child was young, I used it as a footrest in the car. After toilet training is complete, the step stool can be used in various ways. Please rest assured that it is not urine stains. - Brand: BabyBjörn - Color: White - Features: With handles - Design: Removable toilet training seat - Material: Plastic