This "bombproof" wallpaper is put to the test by the people at Popular Science, who substitute a wrecking ball for explosives.The stuff is made of kevlar material sandwiched in a flexible polymer, applied in a single layer to the interior walls of structures. In this test it is quite effective in preventing penetration and subsequent collapse of the wall. the structural integrity would have been compromised of course, but it looks to me like anyone inside a structure so protected would be able to survive and get out to safety.