Red Dingo DURABLES Balls are made from our super-durable fabric, with a memory-foam ball inside. Our ball toys are not only durable, but also soft and satisfying for dogs to catch. Added crinkle film provides an interesting sound to keep them engaged. Squeaker-free and suitable for indoor play. These toys are not indestructible and therefore are not intended as a chew toy. Supervise use and remove if damaged.