Have tons of fun with your dog when playing with these two medium-sized Mighty Ball dog toys. Mighty Ball toys contain NO white poly stuffing. They even squeak and float! The core of this toy is a tough, durable ball, so if your dog does get to the core it's just like having a whole new toy to play with. This ball may seem plush on the outside, but all the durability features are internal, making it soft yet MIGHTY strong! For dogs under 20 lbs.