These COLORFUL and AMAZING small plastic balls are easily batted across slick surfaces. They rattle as they roll and the corkscrew tail movement mimics live prey as it shoots across the room. Innovative and unique, they are FUN for cats of all ages. Handcrafted in the USA, Wiggly Pings help keep cats active, engaged, and entertained. They provide needed enrichment for cats living indoors by indulging them in their need to hunt and play. 1 inch plastic ball with 5 - 7 inch polyester tail.