Instruct: Classify Amazon reviews into positive or negative sentiment
Query: D&D's mom

I have to be vigilant when my 2-year-old uses the Thermos because if he places the cannister on its side, milk will come out of the straw. He also likes to turn it upside down, and milk comes out. I bought two of them only two weeks ago, and one broke today when it fell out of his bag. The cover cracked and the hinge broke off. As a result, the cap will not stay on now. I am looking for other alternatives. Glass is out of the question with my boys!