This bone is very durable; I have four pitbulls who are hard chewers and not only do they love to chew on them, but they have lasted quite a while now. Would recommend them for dogs who love to chew!!!
I have a 10 month old English Mastiff who weighs about 110lbs. She is a very powerful chewer and destroys every toy within days!! I picked this nylabone up and it has been a winner. She has been chewing on it since the end of August and I'm just now going to buy a new one. I would recommend this "Souper" size chew for all those massive breeds!!