Malamute said:
Im curious why most people use plain foam mattresses?
In our case, three reasons: 1) We are in a low top van, and height matters. 2) Flexibility. In our previous layout, we needed a tri-fold configuration. Now the back of our bed frame can sit up, like a chaise lounge, and allows access to storage. The mattress needs to bend. 3) We are really picky, and I can add, subtract and change layers until we find the sweet spot.
There are disadvantages, too, and if we had more height and could test sleep a conventional mattress, that's probably what we'd do.
I strongly considered a custom mattress from Military Supply. But what if we hated it?
It's hard to find a foam base layer that won't develop divets with regular use, but is not too hard. Firmness and density are different things, and its tricky. Thickness changes the feel as well. Our current base layer could have a little more give, but should last very well. Our previous base layer needed to be lighter to maneuver nightly, and broke down and had to be replaced frequently.
Our bed is great now. I have a 3" HD HQ 36 base layer from Foam Factory (4" would be hard as a rock). On top of that is a rug gripper. Next up, three (!) layers of Walmart convoluted foam toppers. (These run small. Get the next size up and trim.) I got tired of loosing brain cells to spray glue, and these are attached to one another, alternating face up and face down, with several double-sided duct tape strips. On top of that is a 2" soft latex topper in a cotton cover from Sleep on Latex. Ahh. All of that is zipped into a cover I made from the shell of an old comforter. I added a polyester upholstery zipper to the top edge so it can be unzipped on three sides, if needed. On top of that is a Hospitology mattress pad. (These are great--stay fluffy, machine washable, and last.) Time for the fitted sheet. On top of that is a cotton flannel comforter. We like to sleep on top of this if it's chilly. If not, a flat sheet on top of that is cooler.
I know, right?! But it is one comfy rabbits' nest! Pillows? Two body pillows and two queen bed pillows. Oh, and I recommend Monroe Sensatrac shocks. Just sayin.