What is the functionality of bibiBabyBox bottle pushed by bloggers in Little Red Book?

The biggest difference between bibibabybox's bottles and those on the market is their "double anti-flatulence" design. In particular, the patented anti-flatulence plug at the bottom greatly improves the overall anti-flatulence and anti-choking functions of the bottle. It is recommended that the baby choose the corresponding nipple according to the age of the month. The nipple hole size of Bibi Baby Box is subdivided into five models, and the nipple flow in different months is different. Many bloggers in Xiaohongshu used this bottle again, and the feedback was good.