The pacifier is not of symmetrical construction, as is the case with the other Avent freeflow pacifiers for example. One can indeed see before buying, but do not judge exactly how it is because of the size in reality. At night you can not see how rum you put the pacifier in his mouth, so that the side with no recess ugly in the nose of the baby presses (9 months old). Furthermore, I have ordered a soother for the night. I find the brightness inadequate. You also will not be better if I had all day in light to recharge the pacifier. Absolute bad buy.