A nice sturdy playpen for our kittens to enjoy the outdoors safety.  It is easy to assemble and zipped together in a breeze.  I just find it much more difficult to fold back up.  I do like that it comes in a nice carrying case with handles.  I purchased a pad to fit on the bottom so that they just are not sitting on the canvas.  It has holders for (tent) spikes (which you need to purchase) so that you can nailed into the ground if needed.  It will work amazing for small critters also.  When we traveled with our rabbits & guinea pig this would have been perfect as it folds up and takes up hardly any room.   I was looking for something like this about 10 years ago and instead had to settle with a folding metal fence for the small critters.