Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great storage containers!

For those people complaining the containers only hold 12 bags there is an easy solution: take the bags out once they are frozen. Once they are frozen in the block shape you can stack them or lay them flat and then you have space for new bags. I used these with my last pregnancy and my husband and I loved them! We tried freezing just the bags but then they leaked no matter how many times we checked to make sure they were sealed all the way. if you uses a little common sense these are great and you don't have to worry about leakage. I got rid of my trays but now that we are pregnant again I'll be repurchasing them.