we love the zisc: living with destructo-dog, we have tested and failed many products claiming durability. destructo-dog has taken the life of upwards of twenty different styles and types of frisbees, all within a matter of seconds to days. the zisc has lived with us for TWO YEARS! with daily testing.
the zisc is a "supervision only" toy for destructo-dog, because she would certainly tear it to bits once breached given the chance. however it has withstood daily onslaughts of tug of war, fetching, and chewing from destructo-dog and her somewhat softer-mouthed aussie henchman. finally a tiny crack in the side has been taken advantage of and zisc will need to be replaced (with another zisc!)
we have tested many other frisbees and find the zisc is durable, withstands tugging and chewing, and above all, flies better than any other dog frisbee we've tried, all without being hard on destructo-dog or her henchman's teeth and gums.
all paws up! especially because zisc is recyclable and west paw cares about the environment and their customers.
(we also like the indestructible! huck and the tux (also called the molecule) and these are more durable because of their harder texture and round shape)