Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Perfect As a Ball Pit

I got this for my 2 yr. old's birthday party, but we tested it out before the actual party. There's plenty of room for maybe 5-6 toddlers. I would say that 500 balls would fill this thing up enough for the kids. But it still seems a bit low to me (the sides of the pool are taller than normal kiddie pools). So I may add 200 more balls or so for added fun. It stayed inflated and i have no issues.{By the way, the pool on the picture, with the three rings (top ring being yellow), isn't the pool I received. I got a larger pool with four rings, still 66" x 18". I just think they used the wrong pic.}