I personally have one of these tents.
The roof is made of ripstop material which is the same as the windows in a camping tent, lets air thru and light thru perfectly
It's woven from nylon using a special reinforcing technique that makes it resistant from tearing or ripping
When the tent deflates it falls to the ground much in the way a bouncy castle does, so the outer pillers and walls fall down so all the inside parts are on the inside. The tent deflates in less than a min (in the time you've packed up machine and booked next appt!) and is then rolled up in the attached outer strip/flap and is rolled up like a sausage and placed in the duffle bag it comes with
In terms of size, it's actually one cm smaller in height than the pop up
The inflating machine is small enough to fit in the palm of your hand and in terms of noise I can have it running and speak on the phone without any problems it really is that quiet I assure you.
Further to that in smaller spaces the tan in tent will only inflate as far as it can thus making it more efficient than the pop up
It's really cute and having worked with it, I can wholeheartedly say its brilliant
Hth