Piyo Piyo - Multi-Functional Stylish Potty Trainer For toddlers This one potty trainer can be used from infancy to toddler. Fits according to the different periods of growth, providing toddler with a safe and comfortable potty training experience. It has 3 stages, the first stage is the complete unit and can be set in the bathroom. The urine/stool tray will catch and hold anything while in use. The tray is easily detachable and cleaning is a breeze. The second stage is for use with out the urine/stool tray and to be set on the toilet. And the third stage is use with out the toilet casing. The lid/seat is detachable and can be placed on a normal toilet seat for use. Top Lid Toilet Seat Urine/Stool Tray (antibacterial-treated plastic) Toilet Case.