Nice little setup, but they can get out if they want no problem : O
Now if they designed them so the floor ZIPPERED in, it would be more of a challenge for them and more secure. Even at that, if a dog is motivated to get out, they can easily chew through or if smart enough (I have one) unzip the zipper. If you're going to be sitting there with them all the time, or if you want to crate them inside this and give them bug and sun protection... very good for that. Easily portable, lightweight. Easy to pop up.