I would make sure there is a sturdy solid surface to put the mattress on, just to make sure you are getting the most out of the product. I have a piece of plywood under mine, since my bed only had wood slats, and it works perfect. Had my mattress 2 years this month.

Maybe because it has a fleece type cover that sticks to the foam and looks kind of wrinkly.

24 hours

It depends on how sensitive you are to foam. Unless you are allergic to foam as long as you keep it covered while using it, you should not have any problem.

The paperwork that came with the product listed 3" thick of "5 pound" memory foam .... adn 5" of high density foam base.

You can do it either way... If you have a bed base like the slats that you buy for beds at Ikea, it works great, but you can also use a traditional box spring. My husband and I have a bed from Ikea with the slats and it has been really comfortable.

I haven't tried out the Tempurpedic, but think it's largely the same product. The 8" seems very comfortable, and my husband is thinking of replacing our queen pillow-top mattress with one of these.

Paperwork says it is "5 pound" memory foam. It is not as firm as our 12" thick mattress with 5" of 5lb foam.

I would buy a High-end like a tempur pedic pillow The spa sensation memory foam mattress are great but fo something like that go Tempur-pedic......

For memory foam mattress go spa sensations....

Special pillow go Tempur-pedic and do some research I would call or go online to their site and check it out.....

The mattress specifications for a queen mattress are 60" x 80". So...I would double check your dimensions.

As far as this product, I found that unless it is kept in a frame, such as a waterbed frame, the mattress will expand a little beyond the size it says after awhile. But not by too much... I did keep my queen spa 8" matress in my queen waterbed frame without another matress without any problems.