Developed to help you and child from the first stage of readiness to that long awaited "independence day." A full size potty that's just the right height for toddlers. The removable seat works on the potty base or adult toilet. to ease your child's transition from her potty to yours. The potty base converts into a step stool. 15 months + Our unique 3-in-1 Toilet Training System takes parent and child from the first stage of readiness to that long-awaited "independence day": A full size potty - just the right height for toddlers A removable seat that works on the potty base or adult toilet. Help ease the child's transition from her potty to yours The potty base converts into a step stool.