The patented Herbal Drift Interior vent Machine is the one vent that Removes the vacuum and the air bubbles present in so much Child bottles. It permits air to go into during the nipple collar with out being included into the breast milk or method.
This Dr Brown’s Child Product is BPA (Bisophenol-A) Loose
BPA, PVC, Lead, Phthalate Loose
Patented Interior Vent Machine
Removes the terrible force and extra air ingestion