Instruct: Classify Amazon reviews into positive or negative sentiment
Query: disappointed mom of twins

I was so excited to receive these bottles as a gift when I was carrying our twins. I had high hopes for Podee after these wonderful reviews. Bottem line is they never worked for us--they are 11 months now and they still do not work. Like the other 1 star reviewer stated the nipple never stays filled. The first time our twins used them one vomited from all the gas in her tummy and my son screamed for two hours from gas pain. A couple months later we had the same problem--no vomit or gas pains but air filled their tummies so quickly they thought they were full when they only had 2 oz! I tried again today and they thought it was an interesting new toy instead of a bottle. I am throwing them away. I wish I had luck like the other reviewers! I could have used an extra set of hands this year. I have never been one to post reviews but had to after such high hopes for Podee.