WORLDWISE-Petlinks: Bottle Buddy Ball Dog Toy. Dogs love the crunchy, crackly sound of bottles. You can refill with your bottles to keep the fun alive. This package contains one 3-1/2 inch in diameter toy and one replaceable bottle. Exterior: 100% Polyester. Lin ing: 100% Nylon. Filling: 100% Polyester. Petlinks products are principally made from recycled, reclaimed, renewable and certified organic materials. Imported.