Saddened to see "Made in China" emblazoned on package so I shouldn't be surprised by the rest: Very light, more 'featherbed' than mattress.  Not possible to use as mattress except for children.  If you slept on this on the floor you might as well be sleeping on a blanket.
BTW--I looked to find out in advance where it was made.  I wouldn't have bought it if I could have had that information, and I wouldn't then have been disappointed.  When will vendors learn not to hide things like this.