"I have used these with my Chesapeake Bay retrievers for years, and they are terrific. They are NOT tug toys, however. You'll be disappointed if you try and use them that way. But if you use them as exercise/retrieval devices, they are easily seen, relatively light to carry and make even the largest dogs look unintimidating to other people. I buy them by the pair, because they often end up high in the trees when I make errant throws."