From The Manufacturer:

WUNDERBALL

best fetch toy. ever.

The Ball Bounced Round the World....The Best Fetch Ball for Dogs and Puppies is .  The Dog Toy that bounces, floats, cleans your dog's teeth, and is virtually indestructible.  So get your dog a new Wunderball today.  Made from 100% Natural Rubber - this product is safe for your pet and safe for the planet.

FEATURES INCLUDE:
• VIRTUALLY INDESTRUCTIBLE 
• WUNDERBALL Floats
• WACKY Bouncing Action
• Safe for your Pup & the Planet
• Cleans Teeth
• Made From Natural Rubber
• 4 Sizes and Lots of Fun Colors
• PROUDLY MADE BY HAND IN NORTH AMERICA 

*Patent Pending     **Not A Chew Toy     **Actual Color may Vary Slightly / Made by Hand