Instruct: Classify Amazon reviews into positive or negative sentiment
Query: BEWARE OF PUTTING 8 oz. IN THIS BOTTLE

I bought these bottles for my newborn. They worked out perfect at first. As he became bigger and needed larger amounts of formula at a time these bottles became a problem. They are advertised to hold 8oz. however that is only if you use liquid and still then you must fill them to the rim. This bottle does not hold 8oz. of the powder formula unless you pre-mix them which does not work for everyone. I have since bought Avent bottles and LOVE them.