In reply to marcus.nepal:
Fine - in which case the Lumo is light, compact, cheap and comfy so you won't go too far wrong. They can leak it seems, others on here have reported that, and one of mine failed on the seam by the valve. Alpkit were very good as normal and just sent me new one and the two we have now have been used a lot over a number of years with no leaks or punctures, but make sure you sleep on a new one a couple of times before heading off as the seam failure was very hard to find (needed a swimming pool!) and harder to fix (loads of seam grip worked for some time).
But I'd stress again, if you think the temp is going to get down to even just 5 or 6 degrees, I reckon you might find the mat feel rather cold. One of the other Thermarest type mats from Alpkit (or elsewhere) might then be a better bet.