Exercise Pens are a good playing ground for your pets whether indoors or outdoors. This versatile pen can be set up in a circle or a square, depending on the space. And to make sure your pet stays secure in his designated area, it has a secure double latch door access. When it's time for your pal to come out, simply open the latch and let him through the step-through door! Best of all, there are no tools needed, which means it's a cinch to set up and it folds flat for easy storage and portability. This pen is paw-sitively perfect for single-pet and multiple-pet households.