After potty training 2 boys this is my favorite seat out there! Unlike the Baby Bjorne (that we’ve owned) this cushiony seat is comfortable and gives your toddler a sense independence during toilet training time & beyond! Our youngest used this from 2 years old until just recently (just turned 4). It comes off & on easily so they can remove themselves when done, helps their fear of falling into the potty lol, & has a pee shield Size Large - covers entire round & oval shaped seats!