The secret lies in the vent system that helps prevent air swallowing more effectively It is an innovative combination of an air valve and an air channel The air valve ensures that the nipple does not collapse during feeding, meaning your baby can feed without having to let go. This eliminates one of the main causes of air swallowing The integrated air channel directs air from the valve directly to the bottom of the bottle - without air bubbles coming into contact with the contents of the bottle This prevents air from accumulating in the milk. The less air in the food, the less air in the baby's tummy So, this is how the bottle helps prevent colic