I use a Tempur brand. Was at the stage of using two sticks to walk with, had hips xrayed and couldnt find the problem, bought the mattress and within a week the problem was gone. Not cheap, works for us.

My late wife told I was hot in bed but then discovered it was the memory foam that made me hot Got rid of of that style of mattress for a spring style and I'm not as hot.

scottlee wrote:

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We have an ergoflex memory foam mattress at home and love it, just a bit heavy for our van and pricey. Have been looking into Origin Memory Foam.

Cheers Lee

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 Never had a memory foam mattress but I imagine that any memory foam mattress will probably be both relatively heavy & pricey. We have found our pocket spring mattress with a 'plush' top to be good for my wife's hip bursitis & definitely cooler than other foam mattresses we've had in hot climates. 

If you know from experience that memory foam is the only/best solution you may have to pay a weight penalty .......... unless a memory foam topper would be any good for you? 

Mention has been made about memory foam of different densities. No doubt a lower density will weigh less, but if it were me I'd want to be pretty sure that it was going to be as good as the one you have at home before parting with the money, because as you say they are not cheap. 

We have a memory foam mattress at home, I find it a bit unnerving, when you walk up to it, it sucks down to my body shape. As I walk past it, it returns to its flat shape. It's like, it remembers my shape when I slept on it!
It also retains body heat they don't tell you that when you buy it.

The memory foam (rubber) made me hot. What did you think I meant mate 

Like I said we have a bed with a memory foam mattress, or rather two King size singles joined together. Yes, with the up and down head a leg tilting etc. The wife uses that, I just wanted a standard bed. I think the main advantage with memory foam, is not with the end user, but for the manufacturer. For transportation, the mattress can be pressed down (and the air extracted) to a small solid block. Imagine sending a King size mattress over, would cost a fortune.
On receipt of the package, you find a large space and cut the straps, plastic wrapping etc., and wait 5 days and the foam grows back to its original shape/size, hence the name memory foam. Don't even think of returning it to the supplier.'
Apparently, the foam responds to heat and weight, so a pressure point of your body on the mattress will warm it up and so will soften. So, it conforms to the shape of your body, provided you don't move. My wife has a soft mattress, I have a hard mattress, they only came in two variants. I don't notice my side softening, but the other mattress does, but already it is showing hollows and looking a bit aged.
They sold us a mattress fitted cover, the fabric supposably has rock or something in it, to reflect the heat back, can't tell any difference, my cover has been taken off. The foam retains body heat, if you look up heat problems on the net, it is a popular subject.
I personally prefer a standard pocket spring mattress, Queen size max, much easier to make, those foam mattresses are so heavy.
All I can say is do your homework carefully.

We use Lambswool mattress covers on innerspring mattress (single beds) - expensive but a good nights sleep.

The child-bride uses blizzard proof overlay and flannelette sheets, then sleeps with one leg hanging out, whereas I use cotton sheets and rarely, in Winter, a light cotton (hospital type) blanket.