Material – The cat ball is made of soft EVA foam; light balls: silent cat toys; cats and puppies can 12 pieces in total, including 12 yellow balls. These rainbow cat balls are bright and vivid, can easily catch your cats’ eyes and arouse their interest. Size – 4.2cm in diameter, about 4.2cm. Cats can pick them up in their mouth and carry them wherever he/she wants to play. Ideal for fetching, training, chewing and teething. Warning – foam balls bounce slightly instead of springy. But your pets will love them. Indoor Cat Toy - Great for interactive or independent play, easy to roll and chase. Perfect birthday gift for cats Product Description — They are made of high quality, soft and lightweight non-toxic EVA foam. Many chew toys (and some baby teethers). are made in the same. Not a good choice if your pet shreds really the toys. —Lightweight enough for your pets to take them in their mouth and carry them anywhere he/she wants to play, easy for your pets to pick them up. Ideal