Part of the Fisher-Price range, this Railroad Rewards Potty also accommodates your child's growth; at first it's a potty seat with a built-in sensor that knows when to reward success with fun train sounds and music. Then, when your child's ready to make the transition to the toilet, the potty ring removes for use on most toilet seats. The potty ring features built-in handles for secure and safe training and the base converts to a sturdy step stool that helps children climb aboard the toilet, and reach the sink to wash their hands.