KUTKUT 24Pcs Cat Toys for Indoor Cats, Cat Big Springs Cat Interactive Toy for Swatting, Biting, Hunting Cat Creative Toy to Kill Time and Keep Fit Colorful Plastic SpringNon Toxic Materials: These Colorful Cat Spring Toys are made of high quality BPA free plastic Which is safer for cats and kittens. Its lightweight, durable. The thick 2. 2mm spring toys make cats bite freely. 4 Bright Colors: Cats like bright colors. Multicolor and bright colors add to the fun. The cat spiral springs are composed of 4 classic colors of yellow, green, pink( some are red) and blue, which attracts the cat's attention! Interactive Cat