I recently purchased 2 Kong collars(size Medium and large) my dog had surgery 2 days ago. The large was too big and this morning he was able to get to the air cap on the medium and broke it. I emailed Chewy and they responded immediately. They are replacing the medium collar(order already processed) and refunding me for the large collar that they do not want returned. They said give it to a shelter(which I will) or someone in need. Never has been dealing with a company been so easy. They are the best and I will continue to buy from them.