Sturdier than regular tennis balls.
About a week after the arrival of my very large one-year-old Newfypoo, I gave her a tennis ball to play with. She was thrilled. After about 20 minutes though, I found pieces of ball strewn across the living room floor. It was lucky she didn't eat any of the pieces. I came across these Chuckit tennis balls and decided to try them. It's been a couple of weeks and so far no pieces. One of the two balls that she is currently playing with does have a hole in the cover, but is otherwise intact. These are of course more expensive than regular tennis balls, but are well worth the price. Over the years I've found all Chuckit items to be sturdy and long-lasting.
ProsSturdy and long-lasting.