Light Up Toys: Balls For Kids & Juggling, Flashing Toys Make Fun Stocking Stuffers Flashing Light Up Balls Are Fun for Everyone: Kids, Dogs & Cats Love Them. Even Adults Will Get a Kick Out of Them. (Balls Are Filled with Water.) Light Up Toys Can Be Used Indoors or Out. Loads of Fun to Play With In The Dark. Set of Two. Fun to Use for Juggling (The Balls Are a Little Heavy Though). Buy Two Sets to Have 3 Juggling Balls Plus An Extra. Bounce Hard To Activate. Balls Will Light Up, Flash and Turn Off On Their Own. No Switches, No Batteries Required. Light Up Balls for Kids Set of 2 Makes the Perfect Stocking Stuffer. (Colors Vary.) Although This Is A Simple Toy, Kids Will Play with It for Hours. Makes a Fun Dog Toy.