Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fun toy for babies and a nostlagic toy for toddlers

I bought these books for my baby boy when he was just born. I used to sing along to him since he was a few weeks old. These were his companions when he first lay on his stomach and he enjoyed grasping them and chewing them when he was a few months old. Now at 2 years, he sees his nephew play with them and still likes to press the circles and describe to mom what he sees. Very durable.