Double sized, flocked inflatable mattress, given to me by another freegler. I have never used it for camping so I can't say what it's like for sleeping on but I have pumped it up and it seems to be fine.
Like this one - http://www.comparestoreprices.co.uk/camping-equipment/gelert-double-deluxe-... (but pump not included!)
Folds up into a tent bag size and not very heavy.
NB: You will need a pump.
Inflatable camping mattress (blue) (Brunswick BN3)
This offer has been gifted to someone and is no longer available.