These crinkle balls are made of plastic material, which is designed in line with the cats' instinct. When cats play the ball, it will in order to attract cats' attention. With our balls, your cat will have comfortable playing experience. Features -Color:Assorted Color -Material:Plastic -Size:6.00X6.00X6.00cm/2.36X2.36X2.36in - Those cat balls for your cats to chase, roll and carry around. Keep them entertained for a long time and help the cats stay exercised and healthy. - The interactive cat toy balls keep cats pouncing, chasing, and playing, and excite their instincts. - Perfect for indoor Cats. Cat toys with bright colors entice cats and inspire a fun atmosphere and enhance the interaction between you and cat. - These kitten toy balls are perfect toys for small animals such as cats, dogs, puppies, etc. - Helping your pets exercise more and helping kittens to stress relievers, and boredom. Package list: 8 x pet toys