Exped - FlexMat

I haven't used it standalone below 2C. In winters gobe by, I have "stacked" with GG thinlight, Switchback and Klymit Xlite torso size (it's kinda like a frame rather than a total inflatable). Or another combo was Switchback with shorter sections of Exoed Flexmat- orange one. This is my conundrum at the moment, and I have moved to a much colder climate. I have ordered a thermarest womens prolite plus self inflating mat in short 120cm size as when side sleeping that will have all but my toes on it anyway. It's R Value is 3.6 I think and it weighs 450g. With a CCF I think I will be ok subzero as anecdotally I fond ccf in those conditions perform better than the R value would suggest, whereas the inflatables I had pre-2021 always seemed to perform worse than advertised. I know it seems very old-fashioned and not UL to get a SI mat, but unless I really have to get an inflatable mat for Winter, I would really rather not.

I exclusively sleep on CCF mats. the best budget, packable and easily available option is the Decathlon MT500. The warmest is the Thermarest Ridgerest but it's bulky. The epxed flexmat, Thermarest Z lite and Nemo Switchback are all good but a bit more pricey. Don't get hung up on R values like you would with an inflatable pad. for some reason CCF mats always feel warmer, i think due to the density of the material. I've slept on ice in the alps with CCF mats. As always though it will depend on the person and you'd need to exercise caution with a young en.

I've tried both the Exped Flexmat and the Flexmat Plus. They rate the thinner version at R1.5 and the thicker version at R2.2, but TBH I really can't tell the difference at the low end of the range (air temps at 30 to 40F). I felt cool through my pad using the Flexmat. I thought I'd be warmer taking the Flexmat Plus, but I really wasn't.

I have three; Exped Ultra 5R, Exped Flex, and Exped Deep Sleep. Ultra & Flex are my backpacking pads and the Deep Sleep is for car camping. Side and back sleeper that runs hot. Spring/summer/fall in the PNW. Go wide/long since you like to roll around.