Instruct: Classify an Amazon review as either positive or negative.
Query: Very Dent Resistant!

I recently bought a ball pit that came with no balls and read many reviews before finally settling on these particular ones for their durability. True to everyone's reviews these balls hold up very nicely! Both me and my husband jump into the ball pit with my 1 1/2 yr old all the time (have had it for about 3 weeks now) and so far none of them have popped or have made any dents in them. I actually bought these when they were on sell (around $12.99/per 100) but am noticing they are higher now and after having used them I do believe the are worth paying more for.