This unique leaf-shaped AirFree vent leads air bubbles away from the teat, and keeps it full of milk even when used horizontally. This helps to reduce air from being swallowed by the baby, and allows it to feed in an upright, seated position. This can help resolve common feeding problems such as colic, gas and reflux. The simple design combines two materials into a single part that is easy to clean and assemble. The iconic and highly visible leaf shaped part is designed to express innovation. The AirFree vent visibly keeps the teat full of milk, not air, which can provide reassurance for the parents.