I just bought my second pen. They are much sturdier than others we have seen or purchased. We have a medium golden-doodle and it’s the perfect size.  My only complaint is the door is very easy to come out of the slots it goes in. We remedied that by putting a bungy cord on it to hold it in place and that works perfect. We didn’t get the rods with the second one but customer service was great and we had them within 4 days. I’m thinking of getting another one for our front yard.