I bought a zogoflex toy for a friend's dog who is a horrible chewer. It was eventually destroyed, but lasted longer than most, so her family ended up ordering a Zisc for her. They bring it to our neighborhood dog park all the time and it lasts through hours of throw/chase/tug. After seeing the fun I bought one for my dog, and it is the only toy that I let her keep outside all winter in our extreme weather - it is still pliable, in one piece, and is daily burried and dug up from the snow banks.