This is a great quality dog pen, well made and sturdy, and super easy to assemble. I'm 60 and not physically strong but I managed to put it together just fine. It's easy to move around without taking it apart, too. The panels are stable and stand well, and the pins can be pushed further into the ground to secure it even more. I used it to create a small "yard" at my summer trailer for my Chihuahua, and it gives her the freedom she loves to lie in the sun and amble around with her bone, without having to be on leash the whole time. Excellent quality and a very good purchase.