The best ball I had for my dog ​​so far

I have now tested 3 types of throwing balls with my dog. This in my opinion is the best so far.
It can be good and far throw and it also does not go as quickly broken. The cord is indeed taken after frequent use something that is sometimes through the use of my dog, flinging the ball sometimes back and forth when they passed him, but so far is still not demolished, so that it still has fun with it. We have, incidentally, a collie mix (about 25-26kg). For the size of dog I would say perfect.