Improved light and battery-life Light up Moon Ball Plugged hole protects from water / moisture We began in Sweden in 2005 with the invention of the original "ball that bounces on water." To this day, we have been committed to creating unique, fun products that change the way you play. We are proud to bring people (and dogs) of all ages together to unplug and play outside until the sun goes down. - Hyper bouncy ball - Diameter: 2.36 inches - Not a dog toy