Potty training? For more success, get the one potty seat that does the work of three! Kids can find the style they like best, or graduate from one stage to the next. It's a self-standing floor potty, it's an on-the-toilet seat with built-in step stool. Or, ready for more independence? Detach the potty step stool, and it's a non-slip, child-size toilet seat. Trainer folds for storage. Supports up to 44 lbs.