Not willing to give up the comfort of the NeoAir I took a chunk of Karrimat along on my last trip, originally it was to go under my feet but the bothy floor was that cold that I ended up with the mat under the mattress, and used my rucksack as a foot rest.
Clearly the NeoAir wasn’t up to the task, and the piece of Karrimat I owned wasn’t long enough to provide cover for the feet as well as the mattress. So I dredged the internet for a solution and what I found was the Multimat Adventure Long, a CCF mat. The stated weight was 215g so along with the weight of the NeoAir at 244g I had a combined weight of 459g. Only 73g heavier than the Multimat Super Compact Light 25 for a full length, more comfortable sleeping solution.
Incidentally the SC25 has an R rating of 3.8 against the 2.5 of the NeoAir, so I’d forgo the comfort of the NeoAir if the conditions dictate. After all there’s no point in having an uber comfortable mattress if I’m kept awake all night by the heat leeching out of my body; I’ve already earned that badge. That said I expect the NeoAir/Adventure Long combo to cope with most situations, now will I need this for Scotland in May I wonder?