Dezi & Roo Wiggly Glows make nighttime play more fun. They bounce really high, glow-in-the-dark, and have tails that wiggle like they're alive. Wiggly Balls help keep cats active, engaged, and entertained. Your cat will chase, pounce, catch, and fetch these irresistible balls. Glow-in-the-dark rubber balls measure approximately 1.75" and the polyester twisted tails between 5 and 8". Assorted colors. USA-made.