It is "cool", opening like a clamshell and offering plenty of room for two adults. (It opens electrically, using two actuators on either end.) Floor is a thick, heavy-duty foam mattress, and very comfortable. There is a built-in ladder that drops down for access. There are screens front and back for ventilation. I added another solar powered ventilator, like you see on boats, to help keep the air moving, especially on days when the screens may be closed. It has LED lighting and a 12v power port. Of course, it also makes for a handy storage space. (Sorry for the late response. Don't know why I had not noticed the "notification" icon before.)

Very Cool pop Top!!!