We bought this at REI as a treat for our dog. She is a five year old Chocolate Lab/Chesapeake Bay Retriever mix and she just loves it. She plays tug-o-war with us when she brings it back to us when playing fetch and it will stretch but not a mark on it. We have recently used it instead of sticks for her to fetch when she goes in the water and it is buoyant and bright (we have it in green) and she gets it every time. I see a lot of Lab owners say their dogs have chewed it up. I don't doubt them, I just say give it a go first - the replacement guarantee is great and your dog will love it.