People ask us all the time where we get our beds from. They're a special-order item called Kuranda Beds. They're super-durable. In fact, we still use our original four beds that we bought way back in 2003! When you consider that some dogs spend a lot of time trying to chew them, flip them, take them outside through the dog door (that is MUCH smaller than the bed) - and that some of those dogs are shepherds, mastiffs and danes - they take a lot of constant wear and tear.
If you're interested in ordering them, the company is super-wonderful to deal with. Very fast and efficient when you e-mail with questions and awesome with product recommendations that make sense for your dog and your home, while minimizing shipping costs.