This product is by far the best I have seen on the market. It is amazing, so durable and un-destructible it really is wonderful. My dog chews on his Bumi all the time, it is by far his favorite toy (in fact he is chewing on it right now!) There are a few minor indention's on the ends of it, but nothing serious. My dog has ripped up every toy you could possibly imagine including the XL Kong so do come across this product saved me, and they are CHEAP considering they will last or you can exchange it! I def. recommend this product and all the zogo flex products to any dog owner wither their dog is a chewer or not, you will never want to buy another toy again!