A Medela Bottle Queston?

Question

I've noticed that some of my sons bottles have a soft part on them as compared to the rest of the bottlw where it is hard. I have never put them in the microwave they have only been in the bottle warmer. Are the bootles bad?? They're Medela

Answer 1

No, they aren't bad. Mine did that after I started to put them in a steam sterilizer. They don't contain harmful chemicals, so it's not a problem. :)