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I'm toying with buying 2 Thermorest self-inflating beds, instead of using the flocked airbed that I already have.

Can you use a thermorest directly on the groundsheet, or do you have to have a rollmat or some other insulator underneath. In other words are Thermorests warm enough to use on their own with a sleeping back or do you need other insulation as well..?

Thanks

Blod

it depends how thick the thermarest is.i have a 4cm ultralight thermarest which is supposed to be for all round use,will be using it this weekend for first time.thats for backpacking though.also have a standard 4cm robens mat and a 5 cm and they are ok for all year round.prefer them to the airbeds which i also have.which one are you thinking of getting and what time of year will you use it?

Thermarests are fine on their own - mine is called a Basecamp but I can't remember the thickness! Its not at all necessary but sometimes I slip my thermarest inside an old child's cotton type envelope sleeping bag which adds a smidge more warmth and cushioning and stops my own sleeping bag slipping on top of the thermarest.

NB Don't buy a Thermarest Dreamtime - they cost a fortune and the people in the shop told me they really, really aren't worth it. MT