1.material: high quality thermo plastic rubber 2.feature:pet toy, pass EN71 and ASTMF963-03 3. size: 4" 1. ... material: made of high quality thermo plastic rubber, pass EN71 and ASTMF963-03, toys for dogs, durable, super bouncy ... and supply many kinds of rubber toys for dogs, such as rubber ball with rope or without rope, rubber bone, rubber stick, rubber pipe, rubber flying saucer, rubber ...