This thing is great. I have a Great Dane that is a runner. Only he likes to run after other dogs' balls. Our solution, a Chuckit so other dogs could try and steal his ball. He loves this thing. He does not like bringing the ball back but that's another story. I used to play high school softball and I no longer have that amazing outfield arm but with this, it doesn't matter. I only wish I had gotten the bigger one because the park we visit doesn't cut the grass as regularly as one would hope, and the ball easily gets lost in just the smallest bit of overgrowth. Yes, even the bright orange one in green grass. I bought this one because I was thinking that if I lost the Chuckit balls I could just throw a regular old tennis ball in there (since my dog doesn't do the whole "retrieve" thing). The problem is that I have lost all but one of the damn balls because you can't find them in the grass. Don't get me wrong, it isn't the Amazon (hee hee) out there, just like a couple inches. At a few bucks a ball, for the nicer ones, it adds up fast. Just something to keep in mind if you have a dum dum like me that likes you to play fetch more than them ;)