The concept is great but you need to know your dog to be certain if this will work for you. If you know that your dog is a Houdini and can actually climb things, they will likely be able to climb out of this pen due to the horizontal metal bars. Our 4 month old Great Dane puppy can climb out with ease, much to our surprise! I wish this product had an add-on accessory of a top. I guess we’re going to have to figure out something- maybe just a tarp and zip ties.