Non-Toxic Materials-- These Colorful Cat Spring Toys are made of high-quality BPA-free plastic Whic 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 plastic springs are composed of 4 classic colors of yellow, green, pink( some are red) and blue, which attracts the cats attention Interactive Cat Toy-- The owner can throw this spring toy on the ground, and it will bounce up and catch the cats attention It is a great way to build strong bonds with your pet these cat springs keep them active which is good for lasing mental and physical health. Soft and Elastic-- This cat spring toy is soft and super elasticity Lightweight and bounce. These bouncy toys will be hard for your cat to resist. Promote Agility and Exercise-- These interactive cat toys for enrichment our kitty spiral springs jump around randomly to keep them chasing, swatting, and running around, which keep your cats amused.