i knew the nipple's hole made by laser.
and don't suggest make by yourself.
or baby will drink milk and rubber together.
so danger!
buy the new one and more safety.
hi,
is me. pls don't mind i talk more. the hole punch is old design and not update. trust my idea . if you appear the nipple with white points, or different from
before you must give up and change the new one.
if baby don't the new you may steam it once or twice time just ok. ?-( ?-( ?-(