In reply to Timmd:
> Common sense to me would be to use a z rest sleeping mat or something like that, rather than what's essentially plastic sheeting to use for thermal insulation from the ground.
> I guess common sense means different things to different people...
Yup, I'm guessing you never read the bit about the cardboard on top of the plastic sheet?
Instead of a z rest sleeping mat I would recommend a 15 tog duvet on top of Egyptian cotton sheets on a orthopaedic mattress on a sleigh bed within a fully insulated capsule that you gently plonk down on the mean street of Wigan
Oh dear