Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great concept, poor design :(

I was so excited to get this for our busy three year old for a long ride to vacation. She was very excited to use it too, but after attaching it (multiple times) even when it appeared to be secure it only took a few minutes for it to start sliding forward which meant that either crayons or playsets were also sliding forward/falling off.