I like the quilted look and feel. With the "Rat Fur" or carpet you could attach with velcro hook side.
I used spray on glue to hold mine.
I thought I would be higher, but the bosters go down to the bed base and the mattress is a WalMart 8" foam cut down to fit.
If I had it to do again I would go to the trouble to fit it around the
windows to make it higher. My experience is when it is cold this helps with the Ensolite being pretty cold.
I have also found that from time to time the dark color shows if there is a leak from a window to find.
(Fixed the leaky window).
I used some cardboard to cut a template and added layers of Reflectex to build thickness and insulation and then covered with a quilted quilt cut to fit.
A worthwhile addition and the Wife agrees.
I would consider using thin foam instead of the Refletex as the product does not really provide a lot of insulating effect it it is in contact with another surface.
That is why I call BS on the insulation claims of the manufacturers.