BUILT FOR TOUGH CHEWERS Boundr™ is the perfect ball for active dogs' who like to chew, fetch, chase, and chomp. Boundr's hollow core and light-weight design allows for satisfying squishy chomp sessions and endless games of fetch. Our NEW Large Boundr 3" ball is now available in single unit packs! Fits into a standard size ball thrower, has a fun texture for easy hand-throwing, is safer and tougher than a tennis ball, and Boundr floats!