This is a great cot- once it’s setup. The middle bar part of the cot was difficult to align, thus the 4 stars. Seems like a manufacturing defect so make sure you have someone strong who can force it to fit! Otherwise,  the large holds our 60lb bulldog nicely, and he enjoys laying on it in the sun. We previously had a navy blue cot like this and it would get too hot in the sun. Happy with the lighter grey color.