Extra balls are a must if you're using the Chuckit! These extra balls will keep your dog occupied for as long as you want
to play. Extra thick rubber core, attractive colors with improved visibility. Per four balls.
The Chuckit launches balls far and the balls bounce and roll. Our dog loves the chase and she would run to exhaustion if we don't pace her. My wife has had surgery on each shoulder so it is a little hard for her to use Chuckit overhand. But she does it underhand and the Chuckit still launches the ball well.
I am using the balls to work with my shorthair on retrieving. They hold up better than regular tennis balls and are a little better priced. The only downside is they are harder than a regular ball. Sometimes my dog likes to catch the balls in the air(she can catch) and I worry about knocking a tooth out.
I have to say this is one of the bet toys I've had for my German Shepherd dog. It gives him great exercise without much effort on my part. I would definitely recommend this product. And it's fun too!!
These hold up well if you keep them indoors when you are not using them. Like tennis balls they will not hold up if left outdoors. There bright orange color makes them easy to see if you dog decides not to fetch it, you can still find it yourself.