Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not so good! LEAKS!!!

I was really looking forward to using these bottles. My son didn't having any problems drinking from them but no matter how I screwed on the top of the bottle it would leak around the ring and the bottle. Sometimes I didn't catch it right away that his bib and clothes would be soaked with formula. Even when my husband would tighten the top he would have problems with it leaking. So we would have to test over the sink each time we made a bottle to make sure it wouldn't leak. I also asked my sister and all my friends that have used AVENT bottles if they had the same problem. They all had problems with them leaking!