This potty seat with ladder is very handy to have when potty training your children. It lets your toddler have better access to the toilet and helps them be more independent when they need to go. Assembly is required but it's not hard to put together, just follow the directions. My children love the cute design and actually like being able to get on the toilet by themselves. The seat and the feet of ladder both have antiskid pads to keep the potty seat firmly on the toilet so it doesn't move around. The toilet seat legs have 6 levels to adjust length so you can adjust it to fit the height of your toilet. The potty seat can fit a toilet that is 15.8inch-18.9inch high. I am happy with this potty seat with ladder and it works like it should.