is there a difference in playtex bottles?
my son is 9mo & ive started giving him more formula every once in a while when i go out because i don't have a pump any more.. when he drinks formula he usually drinks 6-8oz at a time. my question is though is there a difference between the playtex bottles with the liners? i have two different ones & i noticed when they were next to each other the 6oz line & 8oz line was almost even to each other. if that makes any sense? the liners are still the same so im kind of confused? i can take i picture if need be. i just wanna make sure im giving him the right amount of formula to water.
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