ReeBaby True Anti-Colic Glass Baby Bottle with Protective Plastic Cover - Plastic, Silicon(Orange, White)

The lack of ventilation in most bottles, cause a vacuum to build up while the baby is feeding. This can cause problems inside the ear and lead to ear infections. At other times, if the air flow inside the bottle isn't balanced, babies can ingest too much air which can cause them to burp or spit up.The 'Patented Anti-Colic Valve' in our bottles helps to balance out the airflow, which in turn, ensures a smooth and controlled flow to milk to the baby.* Thick Borosilicate Glass Body Why glass? Well, it's simply the safest choice. With glass, you don't have to worry about BPA or any other harmful substances that plastic bottles are associated with.We have also provided an outer, protective plastic case (included in the box), which can prevent the bottle from breaking if dropped accidentally.* Unique two way opening and joint free design: Two way opening means that you can clean the bottle easily, without having to worry about getting to the hard to reach places as with traditional bottles. The joint free design also prevents residue build up inside the bottle.* Silicone nipples and valve: Silicone is an inert substance (i.e. it doesn't react with any other substances), which makes it an ideal choice to use in baby bottles.