This is a set of two 200ml glass baby bottles from Pigeon, slim type. They were sterilized with Milton and stored. The usage period was about 1 month. Because they are made of glass, they can be used cleanly even for newborns who require sterilization. In my personal opinion, because they are the slim type, the nipples seem smaller compared to the Pigeon Mother's Touch bottles. They may be easier to drink from for babies who are not yet good at opening their mouths wide.