I love this toilet seat for potty training. My son is a big kid. He just turned 3 and is 37lbs and 41 inches tall. All the other potties I have purchased have seemed too small. I also wanted to encourage the use of the actual toilet, not just in a free standing potty. The problem I had, was I have an oblong shaped toilet that standard seats they sell would not fit. I would put the other seats on and they would slide around. This was not at all stable and did not encourage my son or myself to want to use it for potty training. With the Mommys Helper seats design it stabilizes as soon as your child steps up onto the stool to sit on the seat. It is the perfect size for little ones but also allows room to grow. The other great part is it is a seat and step stool in one. The handles on the sides are great and allow my child to get on the seat by himself.