The nipple is equipped with a valve that lets out air when the baby closes down on the nipple thereby flattening the nipple to shape naturally after the baby's oral cavity.
The nipple is produced from natural rubber latex. Since natural rubber latex is a natural material, color variation may occur.
It is important to inform you that Bibs' different sizes are only a guide for you to follow. Their experience is that the following sizes are the general and therefore also their common recommendation.
Size 1: 0+ months
Size 2: 6+ months
Size 3: 18+ months
