Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not a big fan!!

I bought these to go with my Medela pump. I have only had 1 leak in the freezer. I didn't know it was a problem until today. I take my kid to the babysitter and she calls and said the amount written on them is not at all even close to what's in the bag. When it says 5 oz there is more like 1.5 oz in the bag. Very frustrating!! Have never tried another bag but will now.