Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not as advertised

One of the main reasons I picked these balls for my kids' ball pit was that it was advertised to be phthalate-free. But when I got the product, I couldn't verify that information anywhere on the packaging or on the balls themselves, which makes me fairly certain that they are not. The only thing I learned was that they were made in China. I'm very disappointed with Amazon for not verifying the "product features" that are listed on its site. If you're thinking of buying this product because it's phthalate-free, don't bother.