The special vent design not only prevents the nipple from collapsing but also avoid baby from swallowing excess air, which may cause colic and hiccough during feeding.

• 特殊透气孔及突状物设计可解决宝宝用力吸奶时发生奶嘴扁平；凹陷等情形.；让宝宝顺畅的吸乳；并避免吸入过多空气；造成腹胀或打嗝