This replacement vent set is exclusively for Dr Brown's Wide neck
Options 270ml bottles.
These are the same pieces that come on each Dr Brown's Options bottle
and are meant to replace worn or lost parts
CONTENTS: DR BROWNS NARROW NECK LEVEL 2 TEAT - 2 PACK.
All Dr Browns teats are super-soft and made of high-grade silicone. Dr
Browns teats are precision cut to allow for the maximum performance
with the flow of liquid. ...