In an 7' duffell bag.

http://www.overstock...5864/product.html

I built a platform for it using pieces of plywood supported by 24" 2x6 pieces of wood. So it is a bit of a stretch getting on, but now I have a 24" high storage space under the bed.

And yes, bman, the platform is STRONG. But you are still not allowed on it. You'll break your hip getting off (old man).

It is expanding right now. I had a "real" Tempur-Pedic before, but was unwilling to spend another $1,000 on a new one, so I'll see if there is any difference.

When we unrolled it I had a moment of panic, thinking I built the bed platform too large, but it quickly expanded and filled it out to the edges.

I pity the UPS guy who had to deliver it.