My dog is obsessed with balls and playing fetch.  She is also a really tough chewer.  The tennis ball that comes with it held up as well as any other tennis ball; not at all.  I also purchased the Chuckit! glow ball which glows super bright and holds up to her tough chewing.  Zoe has trouble dropping the ball for us but has much more confidence in letting her ball go to the Chuckit! so we don't fight her as much for the ball which was a unexpected but major benefit.  Other than that, it works as described; it picks up the balls easy and goes really far.  I wish I had gotten one years ago.  The price on Amazon is fantastic and the free two day Prime shipping got it here as promised.  Best investment ever!