Meterial: made of EVA Foam; lightweight balls--Cat Quiet Play Toys; the cat and puppies can carry the foam balls around the house. Color: Red rainbow is bright so that they can catch the cats' eye easily and attracts your pet's interest. Size: 3.5CM Dia. about 1.38 inches. The cats can pick it up in their mouth and carry it to wherever he/she wants to play. Great for fetching, training, chewing and teething. Bounce: they are not bouncy. But cats and puppies loves them very much. Great for interactive or independent play, easy to roll it and chase.Perfect for birthday gift, pet shop, pet owner. PET SHOW 1.38" Red Rainbow Cat Toy Balls Soft EVA Foam Interactive Indoor Kittens Favorite Toys 35mm Dia. Small Dogs Puppies Toy Balls Bulk Activity Chase Quiet Play Sponge Ball Meterial: EVA Color: red Size: about 35mm/1.38" Dia. Measureed by hand,the size maybe have a little errors. Please understand! Thanks!