Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Waste of time

Thought these would be a great learning bowl for my daughter to use. She figured out how to un-suction the bowl in about 3 seconds flat. Totally defeats the purpose of the suction bottoms. The lids do hold the food in well for traveling, but quite bulky. You're better off using plain ole tupperware when toting around food.