This is a great alternative to the Nerf Soccer Ball  which is currently unavailable.
 
Keep your dogs busy for hours as they play with this toy. Our Aussie tribe loves to use it for tug of wars, soccer and to chew on the straps. These last along time and are the perfect size so the fur kids don't bite it up and destroy it.
 
We have tested many of these and found this to be the right size and last the longest.