Already conquered by the bottles of Advent marks, I have not been disappointed by their teats. They are pretty and small. They are perfectly adapted to the size of the mouth of Toddler. Some other brands offer larger for the same age, but it respects the mouth and a priori the position of the baby's tongue. In any case, my baby adopted it right away and falls asleep easily with. Purchase highly recommended despite a higher price than generic sold in supermarkets. But recommended for baby's comfort. And that's what matters most!