I ordered this cot for my 11-pound cat so he could sit up off the concrete on our screened in patio/porch. When it rains it comes in on the porch and leaves puddles for awhile, so I did not want him sitting in the water. It is very sturdy and well-made and appears to be waterproof. My cat has yet to get on it, but given time, I am sure he will. It is pretty cold out right now, so he is not on the porch that much. I would have given it 5 stars, but the only thing is that when there is no weight on it, it occasionally pops up and sits cockeyed. This could be weather related since the cold causes shrinkage and constriction. Time will tell when it warms up. Still, it is a neat item, and I am looking forward to my cat using it.